75607436721664 has 20 divisors (see below), whose sum is σ = 151067202669504. Its totient is φ = 37803718360576.

The previous prime is 75607436721643. The next prime is 75607436721671. The reversal of 75607436721664 is 46612763470657.

It is a happy number.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 75607436721596 and 75607436721605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73835386912 + ... + 73835387935.

Almost surely, 2^{75607436721664} is an apocalyptic number.

It is an amenable number.

75607436721664 is a deficient number, since it is larger than the sum of its proper divisors (75459765947840).

75607436721664 is an equidigital number, since it uses as much as digits as its factorization.

75607436721664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147670774865 (or 147670774849 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 75607436721664 in words is "seventy-five trillion, six hundred seven billion, four hundred thirty-six million, seven hundred twenty-one thousand, six hundred sixty-four".