200155561655 has 64 divisors (see below), whose sum is σ = 293352192000. Its totient is φ = 128054919168.

The previous prime is 200155561649. The next prime is 200155561679. The reversal of 200155561655 is 556165551002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200155561655 - 2²⁶ = 200088452791 is a prime.

It is a super-2 number, since 2×200155561655² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15203966 + ... + 15217124.

It is an arithmetic number, because the mean of its divisors is an integer number (4583628000).

Almost surely, 2^200155561655 is an apocalyptic number.

200155561655 is a deficient number, since it is larger than the sum of its proper divisors (93196630345).

200155561655 is a wasteful number, since it uses less digits than its factorization.

200155561655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13536.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 200155561655 in words is "two hundred billion, one hundred fifty-five million, five hundred sixty-one thousand, six hundred fifty-five".