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764468686081 = 18136711508403
BaseRepresentation
bin10110001111111011110…
…00100110110100000001
32201002020010200222101001
423013331320212310001
5100011112440423311
61343105253012001
7106142150421352
oct13077570466401
92632203628331
10764468686081
11275233709751
121041ab024001
1357120958879
1429001471d29
1514d43cb04c1
hexb1fde26d01

764468686081 has 8 divisors (see below), whose sum is σ = 770786866304. Its totient is φ = 758173523760.

The previous prime is 764468686061. The next prime is 764468686087. The reversal of 764468686081 is 180686864467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 764468686081 - 29 = 764468685569 is a prime.

It is a super-2 number, since 2×7644686860812 (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 (764468686087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5687775 + ... + 5820628.

It is an arithmetic number, because the mean of its divisors is an integer number (96348358288).

Almost surely, 2764468686081 is an apocalyptic number.

It is an amenable number.

764468686081 is a deficient number, since it is larger than the sum of its proper divisors (6318180223).

764468686081 is a wasteful number, since it uses less digits than its factorization.

764468686081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11508951.

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 764468686081 in words is "seven hundred sixty-four billion, four hundred sixty-eight million, six hundred eighty-six thousand, eighty-one".

Divisors: 1 181 367 66427 11508403 2083020943 4223583901 764468686081