1213655100456 has 16 divisors (see below), whose sum is σ = 3034137751200. Its totient is φ = 404551700144.

The previous prime is 1213655100431. The next prime is 1213655100479. The reversal of 1213655100456 is 6540015563121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25284481236 + ... + 25284481283.

It is an arithmetic number, because the mean of its divisors is an integer number (189633609450).

Almost surely, 2^{1213655100456} is an apocalyptic number.

It is an amenable number.

1213655100456 is an abundant number, since it is smaller than the sum of its proper divisors (1820482650744).

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

1213655100456 is a wasteful number, since it uses less digits than its factorization.

1213655100456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50568962528 (or 50568962524 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 1213655100456 in words is "one trillion, two hundred thirteen billion, six hundred fifty-five million, one hundred thousand, four hundred fifty-six".