5155764642 has 64 divisors (see below), whose sum is σ = 13194086400. Its totient is φ = 1461816720.

The previous prime is 5155764631. The next prime is 5155764671. The reversal of 5155764642 is 2464675515.

5155764642 is a `hidden beast` number, since 5 + 15 + 576 + 4 + 64 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2542 + ... + 101577.

It is an arithmetic number, because the mean of its divisors is an integer number (206157600).

Almost surely, 2^5155764642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5155764642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6597043200).

5155764642 is an abundant number, since it is smaller than the sum of its proper divisors (8038321758).

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

5155764642 is a wasteful number, since it uses less digits than its factorization.

5155764642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104268 (or 104262 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 5155764642 is about 71803.6534028736. The cubic root of 5155764642 is about 1727.5515992694.

The spelling of 5155764642 in words is "five billion, one hundred fifty-five million, seven hundred sixty-four thousand, six hundred forty-two".