40572679969 has 4 divisors (see below), whose sum is σ = 40573255360. Its totient is φ = 40572104580.

The previous prime is 40572679963. The next prime is 40572679991. The reversal of 40572679969 is 96997627504.

40572679969 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 40572679969 - 2¹⁷ = 40572548897 is a prime.

It is a super-2 number, since 2×40572679969² (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 40572679969.

It is not an unprimeable number, because it can be changed into a prime (40572679963) 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, 164277 + ... + 328834.

It is an arithmetic number, because the mean of its divisors is an integer number (10143313840).

Almost surely, 2^40572679969 is an apocalyptic number.

It is an amenable number.

40572679969 is a deficient number, since it is larger than the sum of its proper divisors (575391).

40572679969 is an equidigital number, since it uses as much as digits as its factorization.

40572679969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575390.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 40572679969 in words is "forty billion, five hundred seventy-two million, six hundred seventy-nine thousand, nine hundred sixty-nine".