13777652500 has 30 divisors (see below), whose sum is σ = 30128975954. Its totient is φ = 5511060000.

The previous prime is 13777652459. The next prime is 13777652507. The reversal of 13777652500 is 525677731.

It can be written as a sum of positive squares in 5 ways, for example, as 3118328964 + 10659323536 = 55842^2 + 103244^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13777652507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2753031 + ... + 2758030.

Almost surely, 2^13777652500 is an apocalyptic number.

13777652500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13777652500 is an abundant number, since it is smaller than the sum of its proper divisors (16351323454).

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

13777652500 is an equidigital number, since it uses as much as digits as its factorization.

13777652500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511085 (or 5511068 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 43.

The spelling of 13777652500 in words is "thirteen billion, seven hundred seventy-seven million, six hundred fifty-two thousand, five hundred".