40931955990 has 160 divisors (see below), whose sum is σ = 112954564800. Its totient is φ = 10629273600.

The previous prime is 40931955973. The next prime is 40931956001. The reversal of 40931955990 is 9955913904.

40931955990 is a `hidden beast` number, since 40 + 9 + 3 + 1 + 9 + 5 + 599 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29257311 + ... + 29258709.

It is an arithmetic number, because the mean of its divisors is an integer number (705966030).

Almost surely, 2^40931955990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40931955990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56477282400).

40931955990 is an abundant number, since it is smaller than the sum of its proper divisors (72022608810).

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

40931955990 is a wasteful number, since it uses less digits than its factorization.

40931955990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 1968300, while the sum is 54.

The spelling of 40931955990 in words is "forty billion, nine hundred thirty-one million, nine hundred fifty-five thousand, nine hundred ninety".