201556546460 has 48 divisors (see below), whose sum is σ = 438208716960. Its totient is φ = 77781285120.

The previous prime is 201556546459. The next prime is 201556546481. The reversal of 201556546460 is 64645655102.

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, 604595 + ... + 876725.

It is an arithmetic number, because the mean of its divisors is an integer number (9129348270).

Almost surely, 2^201556546460 is an apocalyptic number.

201556546460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201556546460 is an abundant number, since it is smaller than the sum of its proper divisors (236652170500).

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

201556546460 is a wasteful number, since it uses less digits than its factorization.

201556546460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273446 (or 273444 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 201556546460 in words is "two hundred one billion, five hundred fifty-six million, five hundred forty-six thousand, four hundred sixty".