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972506446081 = 1951498465631
BaseRepresentation
bin11100010011011011110…
…01101011100100000001
310102222012122110011202021
432021231321223210001
5111413143122233311
62022432512121441
7130155421254112
oct16115571534401
93388178404667
10972506446081
1134548a598a05
1213858a536281
137092627bc41
14350d8c4a209
151a46cbdd171
hexe26de6b901

972506446081 has 4 divisors (see below), whose sum is σ = 973004913664. Its totient is φ = 972007978500.

The previous prime is 972506446069. The next prime is 972506446139. The reversal of 972506446081 is 180644605279.

972506446081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 972506446081 - 221 = 972504348929 is a prime.

It is a super-2 number, since 2×9725064460812 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972506146081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249230865 + ... + 249234766.

It is an arithmetic number, because the mean of its divisors is an integer number (243251228416).

Almost surely, 2972506446081 is an apocalyptic number.

It is an amenable number.

972506446081 is a deficient number, since it is larger than the sum of its proper divisors (498467583).

972506446081 is a wasteful number, since it uses less digits than its factorization.

972506446081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498467582.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 972506446081 in words is "nine hundred seventy-two billion, five hundred six million, four hundred forty-six thousand, eighty-one".

Divisors: 1 1951 498465631 972506446081