201557205652 has 12 divisors (see below), whose sum is σ = 384791029056. Its totient is φ = 91616911640.

The previous prime is 201557205631. The next prime is 201557205667. The reversal of 201557205652 is 256502755102.

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 3 ways as a sum of consecutive naturals, for example, 2290422748 + ... + 2290422835.

It is an arithmetic number, because the mean of its divisors is an integer number (32065919088).

Almost surely, 2^201557205652 is an apocalyptic number.

201557205652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201557205652 is a deficient number, since it is larger than the sum of its proper divisors (183233823404).

201557205652 is a wasteful number, since it uses less digits than its factorization.

201557205652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580845598 (or 4580845596 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 201557205652 in words is "two hundred one billion, five hundred fifty-seven million, two hundred five thousand, six hundred fifty-two".