1361556653025 has 96 divisors (see below), whose sum is σ = 2509643122560. Its totient is φ = 647304376320.

The previous prime is 1361556652999. The next prime is 1361556653087. The reversal of 1361556653025 is 5203566551631.

It is not a de Polignac number, because 1361556653025 - 2²⁶ = 1361489544161 is a prime.

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 95 ways as a sum of consecutive naturals, for example, 181126567 + ... + 181134083.

It is an arithmetic number, because the mean of its divisors is an integer number (26142115860).

Almost surely, 2^{1361556653025} is an apocalyptic number.

1361556653025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361556653025 is a deficient number, since it is larger than the sum of its proper divisors (1148086469535).

1361556653025 is a wasteful number, since it uses less digits than its factorization.

1361556653025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15043 (or 15038 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 1361556653025 in words is "one trillion, three hundred sixty-one billion, five hundred fifty-six million, six hundred fifty-three thousand, twenty-five".