40931621010 has 96 divisors (see below), whose sum is σ = 122171212800. Its totient is φ = 9313812864.

The previous prime is 40931620967. The next prime is 40931621011. The reversal of 40931621010 is 1012613904.

40931621010 is a `hidden beast` number, since 4 + 0 + 9 + 31 + 621 + 0 + 1 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (40931621011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5185 + ... + 286164.

It is an arithmetic number, because the mean of its divisors is an integer number (1272616800).

Almost surely, 2^40931621010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40931621010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61085606400).

40931621010 is an abundant number, since it is smaller than the sum of its proper divisors (81239591790).

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

40931621010 is a wasteful number, since it uses less digits than its factorization.

40931621010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291592 (or 291589 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 40931621010 in words is "forty billion, nine hundred thirty-one million, six hundred twenty-one thousand, ten".