1226140725516 has 48 divisors (see below), whose sum is σ = 3272705829120. Its totient is φ = 350004790080.

The previous prime is 1226140725497. The next prime is 1226140725547. The reversal of 1226140725516 is 6155270416221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6598051 + ... + 6781338.

It is an arithmetic number, because the mean of its divisors is an integer number (68181371440).

Almost surely, 2^{1226140725516} is an apocalyptic number.

It is an amenable number.

1226140725516 is an abundant number, since it is smaller than the sum of its proper divisors (2046565103604).

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

1226140725516 is a wasteful number, since it uses less digits than its factorization.

1226140725516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13380494 (or 13380492 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 1226140725516 in words is "one trillion, two hundred twenty-six billion, one hundred forty million, seven hundred twenty-five thousand, five hundred sixteen".