75744012773121 has 128 divisors (see below), whose sum is σ = 133080086937600. Its totient is φ = 37124537621760.

The previous prime is 75744012773119. The next prime is 75744012773161. The reversal of 75744012773121 is 12137721044757.

It is not a de Polignac number, because 75744012773121 - 2¹ = 75744012773119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75744012773161) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5666486380 + ... + 5666499746.

It is an arithmetic number, because the mean of its divisors is an integer number (1039688179200).

Almost surely, 2^{75744012773121} is an apocalyptic number.

It is an amenable number.

75744012773121 is a deficient number, since it is larger than the sum of its proper divisors (57336074164479).

75744012773121 is a wasteful number, since it uses less digits than its factorization.

75744012773121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18579.

The product of its (nonzero) digits is 2304960, while the sum is 51.

The spelling of 75744012773121 in words is "seventy-five trillion, seven hundred forty-four billion, twelve million, seven hundred seventy-three thousand, one hundred twenty-one".