12499432570 has 16 divisors (see below), whose sum is σ = 23477195520. Its totient is φ = 4782391504.

The previous prime is 12499432567. The next prime is 12499432573. The reversal of 12499432570 is 7523499421.

It is an interprime number because it is at equal distance from previous prime (12499432567) and next prime (12499432573).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 12499432570.

It is not an unprimeable number, because it can be changed into a prime (12499432573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27172450 + ... + 27172909.

It is an arithmetic number, because the mean of its divisors is an integer number (1467324720).

Almost surely, 2^12499432570 is an apocalyptic number.

12499432570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12499432570 is a deficient number, since it is larger than the sum of its proper divisors (10977762950).

12499432570 is a wasteful number, since it uses less digits than its factorization.

12499432570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54345389.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 12499432570 in words is "twelve billion, four hundred ninety-nine million, four hundred thirty-two thousand, five hundred seventy".