12558537740 has 48 divisors (see below), whose sum is σ = 31450954752. Its totient is φ = 4118575296.

The previous prime is 12558537727. The next prime is 12558537767. The reversal of 12558537740 is 4773585521.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946864 + ... + 1953303.

It is an arithmetic number, because the mean of its divisors is an integer number (655228224).

Almost surely, 2^12558537740 is an apocalyptic number.

12558537740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12558537740 is an abundant number, since it is smaller than the sum of its proper divisors (18892417012).

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

12558537740 is a wasteful number, since it uses less digits than its factorization.

12558537740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900206 (or 3900204 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 12558537740 in words is "twelve billion, five hundred fifty-eight million, five hundred thirty-seven thousand, seven hundred forty".