40687125802 has 32 divisors (see below), whose sum is σ = 64906304400. Its totient is φ = 19094476800.

The previous prime is 40687125779. The next prime is 40687125803. The reversal of 40687125802 is 20852178604.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3999171121 + 36687954681 = 63239^2 + 191541^2 .

It is not an unprimeable number, because it can be changed into a prime (40687125803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637774 + ... + 698662.

Almost surely, 2^40687125802 is an apocalyptic number.

40687125802 is a deficient number, since it is larger than the sum of its proper divisors (24219178598).

40687125802 is a wasteful number, since it uses less digits than its factorization.

40687125802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61242.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 40687125802 in words is "forty billion, six hundred eighty-seven million, one hundred twenty-five thousand, eight hundred two".