12562931970 has 72 divisors (see below), whose sum is σ = 33751509948. Its totient is φ = 3242024640.

The previous prime is 12562931951. The next prime is 12562931977. The reversal of 12562931970 is 7913926521.

It is a happy number.

12562931970 is a `hidden beast` number, since 1 + 2 + 5 + 629 + 3 + 19 + 7 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12227272929 + 335659041 = 110577^2 + 18321^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12562931977) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13864 + ... + 159116.

Almost surely, 2^12562931970 is an apocalyptic number.

12562931970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12562931970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16875754974).

12562931970 is an abundant number, since it is smaller than the sum of its proper divisors (21188577978).

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

12562931970 is a wasteful number, since it uses less digits than its factorization.

12562931970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145328 (or 145294 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 12562931970 in words is "twelve billion, five hundred sixty-two million, nine hundred thirty-one thousand, nine hundred seventy".