1555907349480 has 128 divisors (see below), whose sum is σ = 5093481553920. Its totient is φ = 377084391680.

The previous prime is 1555907349449. The next prime is 1555907349497. The reversal of 1555907349480 is 849437095551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

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 31 ways as a sum of consecutive naturals, for example, 4619689 + ... + 4945031.

It is an arithmetic number, because the mean of its divisors is an integer number (39792824640).

Almost surely, 2^{1555907349480} is an apocalyptic number.

1555907349480 is a gapful number since it is divisible by the number (10) 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 1555907349480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2546740776960).

1555907349480 is an abundant number, since it is smaller than the sum of its proper divisors (3537574204440).

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

1555907349480 is a wasteful number, since it uses less digits than its factorization.

1555907349480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328991 (or 328987 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 60.

The spelling of 1555907349480 in words is "one trillion, five hundred fifty-five billion, nine hundred seven million, three hundred forty-nine thousand, four hundred eighty".