12570734440 has 32 divisors (see below), whose sum is σ = 30855440160. Its totient is φ = 4571176000.

The previous prime is 12570734437. The next prime is 12570734443. The reversal of 12570734440 is 4443707521.

It is an interprime number because it is at equal distance from previous prime (12570734437) and next prime (12570734443).

It is a super-2 number, since 2×12570734440² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12570734440.

It is not an unprimeable number, because it can be changed into a prime (12570734443) 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, 14284486 + ... + 14285365.

It is an arithmetic number, because the mean of its divisors is an integer number (964232505).

Almost surely, 2^12570734440 is an apocalyptic number.

12570734440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12570734440 is an abundant number, since it is smaller than the sum of its proper divisors (18284705720).

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

12570734440 is a wasteful number, since it uses less digits than its factorization.

12570734440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28569873 (or 28569869 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 12570734440 in words is "twelve billion, five hundred seventy million, seven hundred thirty-four thousand, four hundred forty".