75516422461557 has 128 divisors (see below), whose sum is σ = 132071939112960. Its totient is φ = 37244442816000.

The previous prime is 75516422461523. The next prime is 75516422461661.

75516422461557 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75516422461557 - 2²⁸ = 75516154026101 is a prime.

It is a super-2 number, since 2×75516422461557² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75516422461557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75516422461507) 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, 110023444 + ... + 110707682.

It is an arithmetic number, because the mean of its divisors is an integer number (1031812024320).

Almost surely, 2^{75516422461557} is an apocalyptic number.

75516422461557 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

75516422461557 is a deficient number, since it is larger than the sum of its proper divisors (56555516651403).

75516422461557 is a wasteful number, since it uses less digits than its factorization.

75516422461557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684615.

The product of its digits is 70560000, while the sum is 60.

The spelling of 75516422461557 in words is "seventy-five trillion, five hundred sixteen billion, four hundred twenty-two million, four hundred sixty-one thousand, five hundred fifty-seven".