40688915912 has 12 divisors (see below), whose sum is σ = 76292787105. Its totient is φ = 20344172688.

The previous prime is 40688915899. The next prime is 40688915983. The reversal of 40688915912 is 21951988604.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 37879279876 + 2809636036 = 194626^2 + 53006^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=142634.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 534878 + ... + 606194.

Almost surely, 2^40688915912 is an apocalyptic number.

It is an amenable number.

40688915912 is a deficient number, since it is larger than the sum of its proper divisors (35603871193).

40688915912 is an frugal number, since it uses more digits than its factorization.

40688915912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142640 (or 71319 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 40688915912 in words is "forty billion, six hundred eighty-eight million, nine hundred fifteen thousand, nine hundred twelve".