40356723072 has 32 divisors (see below), whose sum is σ = 107197546680. Its totient is φ = 13452240896.

The previous prime is 40356723053. The next prime is 40356723119. The reversal of 40356723072 is 27032765304.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×40356723072² (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 40356723072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52547433 + ... + 52548200.

Almost surely, 2^40356723072 is an apocalyptic number.

It is an amenable number.

40356723072 is an abundant number, since it is smaller than the sum of its proper divisors (66840823608).

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

40356723072 is a wasteful number, since it uses less digits than its factorization.

40356723072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105095650 (or 105095638 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 39.

The spelling of 40356723072 in words is "forty billion, three hundred fifty-six million, seven hundred twenty-three thousand, seventy-two".