13812172450 has 48 divisors (see below), whose sum is σ = 26540515584. Its totient is φ = 5342385600.

The previous prime is 13812172447. The next prime is 13812172453. The reversal of 13812172450 is 5427121831.

It is an interprime number because it is at equal distance from previous prime (13812172447) and next prime (13812172453).

It is a super-2 number, since 2×13812172450² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13812172453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2519112 + ... + 2524588.

It is an arithmetic number, because the mean of its divisors is an integer number (552927408).

Almost surely, 2^13812172450 is an apocalyptic number.

13812172450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13812172450 is a deficient number, since it is larger than the sum of its proper divisors (12728343134).

13812172450 is a wasteful number, since it uses less digits than its factorization.

13812172450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147 (or 7142 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 13812172450 in words is "thirteen billion, eight hundred twelve million, one hundred seventy-two thousand, four hundred fifty".