50778205400986 has 32 divisors (see below), whose sum is σ = 90051165504000. Its totient is φ = 21011403783552.

The previous prime is 50778205400969. The next prime is 50778205401031. The reversal of 50778205400986 is 68900450287705.

It is a super-2 number, since 2×50778205400986² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32898495 + ... + 34407373.

It is an arithmetic number, because the mean of its divisors is an integer number (2814098922000).

Almost surely, 2^{50778205400986} is an apocalyptic number.

50778205400986 is a deficient number, since it is larger than the sum of its proper divisors (39272960103014).

50778205400986 is a wasteful number, since it uses less digits than its factorization.

50778205400986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591806.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 50778205400986 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred thousand, nine hundred eighty-six".