1555277080896 has 560 divisors, whose sum is σ = 5933406707712. Its totient is φ = 390933734400.

The previous prime is 1555277080871. The next prime is 1555277080913. The reversal of 1555277080896 is 6980807725551.

1555277080896 is a `hidden beast` number, since 1 + 5 + 552 + 7 + 70 + 8 + 0 + 8 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12311365 + ... + 12437051.

Almost surely, 2^{1555277080896} is an apocalyptic number.

1555277080896 is a gapful number since it is divisible by the number (16) 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 1555277080896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2966703353856).

1555277080896 is an abundant number, since it is smaller than the sum of its proper divisors (4378129626816).

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

1555277080896 is a wasteful number, since it uses less digits than its factorization.

1555277080896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125760 (or 125741 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 63.

The spelling of 1555277080896 in words is "one trillion, five hundred fifty-five billion, two hundred seventy-seven million, eighty thousand, eight hundred ninety-six".