12137885550 has 108 divisors (see below), whose sum is σ = 37934676936. Its totient is φ = 2774368800.

The previous prime is 12137885527. The next prime is 12137885569. The reversal of 12137885550 is 5558873121.

12137885550 is a `hidden beast` number, since 1 + 2 + 13 + 7 + 8 + 85 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 12137885496 and 12137885505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 253186 + ... + 297285.

Almost surely, 2^12137885550 is an apocalyptic number.

12137885550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12137885550 is an abundant number, since it is smaller than the sum of its proper divisors (25796791386).

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

12137885550 is a wasteful number, since it uses less digits than its factorization.

12137885550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550503 (or 550488 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 45.

The spelling of 12137885550 in words is "twelve billion, one hundred thirty-seven million, eight hundred eighty-five thousand, five hundred fifty".