12877752500 has 60 divisors (see below), whose sum is σ = 28440449268. Its totient is φ = 5100000000.

The previous prime is 12877752409. The next prime is 12877752521. The reversal of 12877752500 is 525777821.

It can be written as a sum of positive squares in 10 ways, for example, as 4241395876 + 8636356624 = 65126^2 + 92932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 227000 + ... + 278000.

Almost surely, 2^12877752500 is an apocalyptic number.

12877752500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12877752500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14220224634).

12877752500 is an abundant number, since it is smaller than the sum of its proper divisors (15562696768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12877752500 is a wasteful number, since it uses less digits than its factorization.

12877752500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51126 (or 51109 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 44.

The spelling of 12877752500 in words is "twelve billion, eight hundred seventy-seven million, seven hundred fifty-two thousand, five hundred".