50161661066655 has 80 divisors (see below), whose sum is σ = 90626613547008. Its totient is φ = 26542919160000.

The previous prime is 50161661066639. The next prime is 50161661066701. The reversal of 50161661066655 is 55666016616105.

It is not a de Polignac number, because 50161661066655 - 2⁴ = 50161661066639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 49091010 + ... + 50102400.

Almost surely, 2^{50161661066655} is an apocalyptic number.

50161661066655 is a deficient number, since it is larger than the sum of its proper divisors (40464952480353).

50161661066655 is a wasteful number, since it uses less digits than its factorization.

50161661066655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012370 (or 1012361 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 50161661066655 in words is "fifty trillion, one hundred sixty-one billion, six hundred sixty-one million, sixty-six thousand, six hundred fifty-five".