1555253042504 has 64 divisors (see below), whose sum is σ = 3446155484160. Its totient is φ = 643917496320.

The previous prime is 1555253042489. The next prime is 1555253042561. The reversal of 1555253042504 is 4052403525551.

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, 225344 + ... + 1778000.

It is an arithmetic number, because the mean of its divisors is an integer number (53846179440).

Almost surely, 2^{1555253042504} is an apocalyptic number.

1555253042504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1555253042504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723077742080).

1555253042504 is an abundant number, since it is smaller than the sum of its proper divisors (1890902441656).

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

1555253042504 is a wasteful number, since it uses less digits than its factorization.

1555253042504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553278 (or 1553274 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 1555253042504 in words is "one trillion, five hundred fifty-five billion, two hundred fifty-three million, forty-two thousand, five hundred four".