1555849479408 has 60 divisors (see below), whose sum is σ = 4675486452840. Its totient is φ = 444528422016.

The previous prime is 1555849479383. The next prime is 1555849479449. The reversal of 1555849479408 is 8049749485551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330747963 + ... + 330752666.

It is an arithmetic number, because the mean of its divisors is an integer number (77924774214).

Almost surely, 2^{1555849479408} is an apocalyptic number.

It is an amenable number.

1555849479408 is an abundant number, since it is smaller than the sum of its proper divisors (3119636973432).

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

1555849479408 is a wasteful number, since it uses less digits than its factorization.

1555849479408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661500654 (or 661500641 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 69.

The spelling of 1555849479408 in words is "one trillion, five hundred fifty-five billion, eight hundred forty-nine million, four hundred seventy-nine thousand, four hundred eight".