180398476771056 has 120 divisors (see below), whose sum is σ = 507151576520784. Its totient is φ = 59860565760000.

The previous prime is 180398476771027. The next prime is 180398476771069. The reversal of 180398476771056 is 650177674893081.

180398476771056 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 98 + 476 + 7 + 7 + 10 + 56 = 666.

It is a super-2 number, since 2×180398476771056² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 268916056 + ... + 269586056.

Almost surely, 2^{180398476771056} is an apocalyptic number.

180398476771056 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 180398476771056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253575788260392).

180398476771056 is an abundant number, since it is smaller than the sum of its proper divisors (326753099749728).

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

180398476771056 is a wasteful number, since it uses less digits than its factorization.

180398476771056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678479 (or 678470 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 72.

The spelling of 180398476771056 in words is "one hundred eighty trillion, three hundred ninety-eight billion, four hundred seventy-six million, seven hundred seventy-one thousand, fifty-six".