201556455060 has 48 divisors (see below), whose sum is σ = 577482687936. Its totient is φ = 52498424832.

The previous prime is 201556455053. The next prime is 201556455109. The reversal of 201556455060 is 60554655102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39058749 + ... + 39063908.

It is an arithmetic number, because the mean of its divisors is an integer number (12030889332).

Almost surely, 2^201556455060 is an apocalyptic number.

201556455060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201556455060 is an abundant number, since it is smaller than the sum of its proper divisors (375926232876).

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

201556455060 is a wasteful number, since it uses less digits than its factorization.

201556455060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78122712 (or 78122710 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 201556455060 in words is "two hundred one billion, five hundred fifty-six million, four hundred fifty-five thousand, sixty".