12562951940 has 96 divisors (see below), whose sum is σ = 32944665600. Its totient is φ = 3909467520.

The previous prime is 12562951913. The next prime is 12562951957. The reversal of 12562951940 is 4915926521.

It is a super-2 number, since 2×12562951940² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 12562951891 and 12562951900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1008671 + ... + 1021049.

It is an arithmetic number, because the mean of its divisors is an integer number (343173600).

Almost surely, 2^12562951940 is an apocalyptic number.

12562951940 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 12562951940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16472332800).

12562951940 is an abundant number, since it is smaller than the sum of its proper divisors (20381713660).

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

12562951940 is a wasteful number, since it uses less digits than its factorization.

12562951940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13065 (or 13063 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 12562951940 in words is "twelve billion, five hundred sixty-two million, nine hundred fifty-one thousand, nine hundred forty".