1558490977872 has 120 divisors (see below), whose sum is σ = 4504614686208. Its totient is φ = 502481376000.

The previous prime is 1558490977811. The next prime is 1558490977907. The reversal of 1558490977872 is 2787790948551.

1558490977872 is a `hidden beast` number, since 1 + 5 + 58 + 490 + 9 + 7 + 7 + 87 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1558490977872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8718997 + ... + 8895947.

Almost surely, 2^{1558490977872} is an apocalyptic number.

1558490977872 is a gapful number since it is divisible by the number (12) 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 1558490977872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252307343104).

1558490977872 is an abundant number, since it is smaller than the sum of its proper divisors (2946123708336).

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

1558490977872 is a wasteful number, since it uses less digits than its factorization.

1558490977872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178969 (or 178960 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 72.

The spelling of 1558490977872 in words is "one trillion, five hundred fifty-eight billion, four hundred ninety million, nine hundred seventy-seven thousand, eight hundred seventy-two".