40991372502 has 64 divisors (see below), whose sum is σ = 91672922880. Its totient is φ = 12143333376.

The previous prime is 40991372497. The next prime is 40991372503. The reversal of 40991372502 is 20527319904.

40991372502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40991372503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560518 + ... + 629414.

It is an arithmetic number, because the mean of its divisors is an integer number (1432389420).

Almost surely, 2^40991372502 is an apocalyptic number.

40991372502 is an abundant number, since it is smaller than the sum of its proper divisors (50681550378).

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

40991372502 is a wasteful number, since it uses less digits than its factorization.

40991372502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69245.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 40991372502 in words is "forty billion, nine hundred ninety-one million, three hundred seventy-two thousand, five hundred two".