50778205404558 has 16 divisors (see below), whose sum is σ = 101670905082240. Its totient is φ = 16906986089336.

The previous prime is 50778205404503. The next prime is 50778205404559. The reversal of 50778205404558 is 85540450287705.

It is a happy number.

It is a super-2 number, since 2×50778205404558² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778205404559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4770588948 + ... + 4770599591.

It is an arithmetic number, because the mean of its divisors is an integer number (6354431567640).

Almost surely, 2^{50778205404558} is an apocalyptic number.

50778205404558 is an abundant number, since it is smaller than the sum of its proper divisors (50892699677682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50778205404558 is a wasteful number, since it uses less digits than its factorization.

50778205404558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541189431.

The product of its (nonzero) digits is 62720000, while the sum is 60.

The spelling of 50778205404558 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred four thousand, five hundred fifty-eight".