50778205404278 has 12 divisors (see below), whose sum is σ = 83721090728940. Its totient is φ = 23081002456380.

The previous prime is 50778205404221. The next prime is 50778205404293. The reversal of 50778205404278 is 87240450287705.

It is a happy number.

It is a super-2 number, since 2×50778205404278² (a number of 28 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 5 ways as a sum of consecutive naturals, for example, 104913647288 + ... + 104913647771.

It is an arithmetic number, because the mean of its divisors is an integer number (6976757560745).

Almost surely, 2^{50778205404278} is an apocalyptic number.

50778205404278 is a deficient number, since it is larger than the sum of its proper divisors (32942885324662).

50778205404278 is a wasteful number, since it uses less digits than its factorization.

50778205404278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209827295083 (or 209827295072 counting only the distinct ones).

The product of its (nonzero) digits is 35123200, while the sum is 59.

The spelling of 50778205404278 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred four thousand, two hundred seventy-eight".