16487545077 has 6 divisors (see below), whose sum is σ = 23815342902. Its totient is φ = 10991696712.

The previous prime is 16487545069. The next prime is 16487545091. The reversal of 16487545077 is 77054578461.

16487545077 is a `hidden beast` number, since 1 + 6 + 4 + 87 + 54 + 507 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10246703076 + 6240842001 = 101226^2 + 78999^2 .

It is not a de Polignac number, because 16487545077 - 2³ = 16487545069 is a prime.

It is a super-2 number, since 2×16487545077² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16487545007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 915974718 + ... + 915974735.

It is an arithmetic number, because the mean of its divisors is an integer number (3969223817).

Almost surely, 2^16487545077 is an apocalyptic number.

It is an amenable number.

16487545077 is a deficient number, since it is larger than the sum of its proper divisors (7327797825).

16487545077 is a wasteful number, since it uses less digits than its factorization.

16487545077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831949459 (or 1831949456 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 16487545077 in words is "sixteen billion, four hundred eighty-seven million, five hundred forty-five thousand, seventy-seven".