75436144163457 has 24 divisors (see below), whose sum is σ = 127639635396192. Its totient is φ = 39187607356800.

The previous prime is 75436144163449. The next prime is 75436144163467.

75436144163457 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75436144163457 - 2³ = 75436144163449 is a prime.

It is a super-2 number, since 2×75436144163457² (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 75436144163457.

It is not an unprimeable number, because it can be changed into a prime (75436144163407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23325955144 + ... + 23325958377.

It is an arithmetic number, because the mean of its divisors is an integer number (5318318141508).

Almost surely, 2^{75436144163457} is an apocalyptic number.

75436144163457 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

75436144163457 is a deficient number, since it is larger than the sum of its proper divisors (52203491232735).

75436144163457 is a wasteful number, since it uses less digits than its factorization.

75436144163457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46651913549 (or 46651913542 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 60.

The spelling of 75436144163457 in words is "seventy-five trillion, four hundred thirty-six billion, one hundred forty-four million, one hundred sixty-three thousand, four hundred fifty-seven".