6416157202561 has 4 divisors (see below), whose sum is σ = 6416512745472. Its totient is φ = 6415801659652.

The previous prime is 6416157202547. The next prime is 6416157202573. The reversal of 6416157202561 is 1652027516146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6416157202561 - 2³¹ = 6414009718913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6416157202591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177744385 + ... + 177780478.

It is an arithmetic number, because the mean of its divisors is an integer number (1604128186368).

Almost surely, 2^{6416157202561} is an apocalyptic number.

It is an amenable number.

6416157202561 is a deficient number, since it is larger than the sum of its proper divisors (355542911).

6416157202561 is a wasteful number, since it uses less digits than its factorization.

6416157202561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355542910.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 6416157202561 in words is "six trillion, four hundred sixteen billion, one hundred fifty-seven million, two hundred two thousand, five hundred sixty-one".