16164551977 has 16 divisors (see below), whose sum is σ = 18620784000. Its totient is φ = 13745445120.

The previous prime is 16164551957. The next prime is 16164551981. The reversal of 16164551977 is 77915546161.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16164551977 is a prime.

It is a super-2 number, since 2×16164551977² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16164551957) 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, 515649 + ... + 546097.

It is an arithmetic number, because the mean of its divisors is an integer number (1163799000).

Almost surely, 2^16164551977 is an apocalyptic number.

It is an amenable number.

16164551977 is a deficient number, since it is larger than the sum of its proper divisors (2456232023).

16164551977 is a wasteful number, since it uses less digits than its factorization.

16164551977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31056.

The product of its digits is 1587600, while the sum is 52.

The spelling of 16164551977 in words is "sixteen billion, one hundred sixty-four million, five hundred fifty-one thousand, nine hundred seventy-seven".