75549665974440 has 64 divisors (see below), whose sum is σ = 259027426200960. Its totient is φ = 17268495079680.

The previous prime is 75549665974429. The next prime is 75549665974441. The reversal of 75549665974440 is 4447956694557.

It is not an unprimeable number, because it can be changed into a prime (75549665974441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44970038431 + ... + 44970040110.

It is an arithmetic number, because the mean of its divisors is an integer number (4047303534390).

Almost surely, 2^{75549665974440} is an apocalyptic number.

75549665974440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75549665974440 is an abundant number, since it is smaller than the sum of its proper divisors (183477760226520).

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

75549665974440 is a wasteful number, since it uses less digits than its factorization.

75549665974440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89940078562 (or 89940078558 counting only the distinct ones).

The product of its (nonzero) digits is 4572288000, while the sum is 75.

The spelling of 75549665974440 in words is "seventy-five trillion, five hundred forty-nine billion, six hundred sixty-five million, nine hundred seventy-four thousand, four hundred forty".