16257316661377 has 12 divisors (see below), whose sum is σ = 17886944976768. Its totient is φ = 14765043675800.

The previous prime is 16257316661371. The next prime is 16257316661407. The reversal of 16257316661377 is 77316661375261.

It is not a de Polignac number, because 16257316661377 - 2¹¹ = 16257316659329 is a prime.

It is a super-2 number, since 2×16257316661377² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16257316661371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65034313 + ... + 65283814.

It is an arithmetic number, because the mean of its divisors is an integer number (1490578748064).

Almost surely, 2^{16257316661377} is an apocalyptic number.

It is an amenable number.

16257316661377 is a deficient number, since it is larger than the sum of its proper divisors (1629628315391).

16257316661377 is a wasteful number, since it uses less digits than its factorization.

16257316661377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130319180 (or 130319169 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 61.

The spelling of 16257316661377 in words is "sixteen trillion, two hundred fifty-seven billion, three hundred sixteen million, six hundred sixty-one thousand, three hundred seventy-seven".