16165390077 has 24 divisors (see below), whose sum is σ = 24233634880. Its totient is φ = 10768554720.

The previous prime is 16165390063. The next prime is 16165390139. The reversal of 16165390077 is 77009356161.

It is not a de Polignac number, because 16165390077 - 2¹⁶ = 16165324541 is a prime.

It is a super-2 number, since 2×16165390077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165390177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295824 + ... + 346182.

Almost surely, 2^16165390077 is an apocalyptic number.

It is an amenable number.

16165390077 is a deficient number, since it is larger than the sum of its proper divisors (8068244803).

16165390077 is an equidigital number, since it uses as much as digits as its factorization.

16165390077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51695 (or 51683 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 16165390077 in words is "sixteen billion, one hundred sixty-five million, three hundred ninety thousand, seventy-seven".