40521688692 has 24 divisors (see below), whose sum is σ = 96334582176. Its totient is φ = 13252375968.

The previous prime is 40521688681. The next prime is 40521688703. The reversal of 40521688692 is 29688612504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40521688681) and next prime (40521688703).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31856038 + ... + 31857309.

It is an arithmetic number, because the mean of its divisors is an integer number (4013940924).

Almost surely, 2^40521688692 is an apocalyptic number.

It is an amenable number.

40521688692 is an abundant number, since it is smaller than the sum of its proper divisors (55812893484).

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

40521688692 is a wasteful number, since it uses less digits than its factorization.

40521688692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63713407 (or 63713405 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 40521688692 in words is "forty billion, five hundred twenty-one million, six hundred eighty-eight thousand, six hundred ninety-two".