50142779736 has 128 divisors (see below), whose sum is σ = 144236367360. Its totient is φ = 14229734400.

The previous prime is 50142779693. The next prime is 50142779747. The reversal of 50142779736 is 63797724105.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16379646 + ... + 16382706.

It is an arithmetic number, because the mean of its divisors is an integer number (1126846620).

Almost surely, 2^50142779736 is an apocalyptic number.

50142779736 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50142779736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72118183680).

50142779736 is an abundant number, since it is smaller than the sum of its proper divisors (94093587624).

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

50142779736 is a wasteful number, since it uses less digits than its factorization.

50142779736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705 (or 3701 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 51.

The spelling of 50142779736 in words is "fifty billion, one hundred forty-two million, seven hundred seventy-nine thousand, seven hundred thirty-six".