40165572072 has 32 divisors (see below), whose sum is σ = 102115864800. Its totient is φ = 13161599424.

The previous prime is 40165572071. The next prime is 40165572089. The reversal of 40165572072 is 27027556104.

It is a super-2 number, since 2×40165572072² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40165572072.

It is not an unprimeable number, because it can be changed into a prime (40165572071) 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, 14181343 + ... + 14184174.

It is an arithmetic number, because the mean of its divisors is an integer number (3191120775).

Almost surely, 2^40165572072 is an apocalyptic number.

It is an amenable number.

40165572072 is an abundant number, since it is smaller than the sum of its proper divisors (61950292728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40165572072 is a wasteful number, since it uses less digits than its factorization.

40165572072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365585 (or 28365581 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 40165572072 in words is "forty billion, one hundred sixty-five million, five hundred seventy-two thousand, seventy-two".