2016555500657 has 4 divisors (see below), whose sum is σ = 2028927006960. Its totient is φ = 2004183994356.

The previous prime is 2016555500653. The next prime is 2016555500759. The reversal of 2016555500657 is 7560055556102.

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 2016555500657 - 2² = 2016555500653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016555500653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6185752907 + ... + 6185753232.

It is an arithmetic number, because the mean of its divisors is an integer number (507231751740).

Almost surely, 2^{2016555500657} is an apocalyptic number.

It is an amenable number.

2016555500657 is a deficient number, since it is larger than the sum of its proper divisors (12371506303).

2016555500657 is a wasteful number, since it uses less digits than its factorization.

2016555500657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371506302.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 2016555500657 in words is "two trillion, sixteen billion, five hundred fifty-five million, five hundred thousand, six hundred fifty-seven".