Search a number
-
+
40068060481 = 79507190639
BaseRepresentation
bin100101010100001111…
…100001010101000001
310211102102010100221001
4211110033201111001
51124024410413411
630223525332001
72615631615601
oct452417412501
9124372110831
1040068060481
1115aa1414979
127922867001
133a171c2337
141d21646c01
15109797cdc1
hex9543e1541

40068060481 has 4 divisors (see below), whose sum is σ = 40575251200. Its totient is φ = 39560869764.

The previous prime is 40068060479. The next prime is 40068060509. The reversal of 40068060481 is 18406086004.

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 40068060481 - 21 = 40068060479 is a prime.

It is a super-2 number, since 2×400680604812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40068060481.

It is not an unprimeable number, because it can be changed into a prime (40068060581) 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, 253595241 + ... + 253595398.

It is an arithmetic number, because the mean of its divisors is an integer number (10143812800).

Almost surely, 240068060481 is an apocalyptic number.

It is an amenable number.

40068060481 is a deficient number, since it is larger than the sum of its proper divisors (507190719).

40068060481 is an equidigital number, since it uses as much as digits as its factorization.

40068060481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507190718.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 40068060481 in words is "forty billion, sixty-eight million, sixty thousand, four hundred eighty-one".

Divisors: 1 79 507190639 40068060481