40191765504 has 88 divisors (see below), whose sum is σ = 116864507328. Its totient is φ = 12179312640.

The previous prime is 40191765457. The next prime is 40191765527. The reversal of 40191765504 is 40556719104.

It is a tau number, because it is divible by the number of its divisors (88).

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, 560902 + ... + 628485.

Almost surely, 2^40191765504 is an apocalyptic number.

40191765504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40191765504 is an abundant number, since it is smaller than the sum of its proper divisors (76672741824).

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

40191765504 is a wasteful number, since it uses less digits than its factorization.

40191765504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189421 (or 1189403 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 40191765504 in words is "forty billion, one hundred ninety-one million, seven hundred sixty-five thousand, five hundred four".