16125891776 has 14 divisors (see below), whose sum is σ = 31999816620. Its totient is φ = 8062945856.

The previous prime is 16125891763. The next prime is 16125891797. The reversal of 16125891776 is 67719852161.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125983466 + ... + 125983593.

Almost surely, 2^16125891776 is an apocalyptic number.

16125891776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16125891776 is a deficient number, since it is larger than the sum of its proper divisors (15873924844).

16125891776 is an equidigital number, since it uses as much as digits as its factorization.

16125891776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251967071 (or 251967061 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 53.

The spelling of 16125891776 in words is "sixteen billion, one hundred twenty-five million, eight hundred ninety-one thousand, seven hundred seventy-six".