50166061555 has 4 divisors (see below), whose sum is σ = 60199273872. Its totient is φ = 40132849240.

The previous prime is 50166061501. The next prime is 50166061571. The reversal of 50166061555 is 55516066105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55516066105 = 5 ⋅11103213221.

It is a de Polignac number, because none of the positive numbers 2^k-50166061555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5016606151 + ... + 5016606160.

It is an arithmetic number, because the mean of its divisors is an integer number (15049818468).

Almost surely, 2^50166061555 is an apocalyptic number.

50166061555 is a deficient number, since it is larger than the sum of its proper divisors (10033212317).

50166061555 is a wasteful number, since it uses less digits than its factorization.

50166061555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10033212316.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 50166061555 in words is "fifty billion, one hundred sixty-six million, sixty-one thousand, five hundred fifty-five".