40641761832 has 32 divisors (see below), whose sum is σ = 116119320000. Its totient is φ = 11611931904.

The previous prime is 40641761821. The next prime is 40641761837. The reversal of 40641761832 is 23816714604.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (40641761837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120957457 + ... + 120957792.

It is an arithmetic number, because the mean of its divisors is an integer number (3628728750).

Almost surely, 2^40641761832 is an apocalyptic number.

40641761832 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40641761832 is an abundant number, since it is smaller than the sum of its proper divisors (75477558168).

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

40641761832 is a wasteful number, since it uses less digits than its factorization.

40641761832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241915265 (or 241915261 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 40641761832 in words is "forty billion, six hundred forty-one million, seven hundred sixty-one thousand, eight hundred thirty-two".