6642077513761 has 16 divisors (see below), whose sum is σ = 6809241600000. Its totient is φ = 6476754141648.

The previous prime is 6642077513737. The next prime is 6642077513767. The reversal of 6642077513761 is 1673157702466.

6642077513761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6642077513761 - 2³⁷ = 6504638560289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642077513767) 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, 37368846 + ... + 37546168.

It is an arithmetic number, because the mean of its divisors is an integer number (425577600000).

Almost surely, 2^{6642077513761} is an apocalyptic number.

It is an amenable number.

6642077513761 is a deficient number, since it is larger than the sum of its proper divisors (167164086239).

6642077513761 is a wasteful number, since it uses less digits than its factorization.

6642077513761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182508.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 6642077513761 in words is "six trillion, six hundred forty-two billion, seventy-seven million, five hundred thirteen thousand, seven hundred sixty-one".