12777513890 has 16 divisors (see below), whose sum is σ = 23037426432. Its totient is φ = 5102583024.

The previous prime is 12777513887. The next prime is 12777513907. The reversal of 12777513890 is 9831577721.

It is a super-2 number, since 2×12777513890² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046444 + ... + 1058583.

It is an arithmetic number, because the mean of its divisors is an integer number (1439839152).

Almost surely, 2^12777513890 is an apocalyptic number.

12777513890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12777513890 is a deficient number, since it is larger than the sum of its proper divisors (10259912542).

12777513890 is a wasteful number, since it uses less digits than its factorization.

12777513890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105641.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 12777513890 in words is "twelve billion, seven hundred seventy-seven million, five hundred thirteen thousand, eight hundred ninety".