5120733781 has 8 divisors (see below), whose sum is σ = 5240505600. Its totient is φ = 5002285680.

The previous prime is 5120733773. The next prime is 5120733851. The reversal of 5120733781 is 1873370215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5120733781 - 2³ = 5120733773 is a prime.

It is a super-2 number, since 2×5120733781² = 52443828911749111922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5120733781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5120733181) 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, 323101 + ... + 338578.

It is an arithmetic number, because the mean of its divisors is an integer number (655063200).

Almost surely, 2^5120733781 is an apocalyptic number.

It is an amenable number.

5120733781 is a deficient number, since it is larger than the sum of its proper divisors (119771819).

5120733781 is a wasteful number, since it uses less digits than its factorization.

5120733781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661859.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 5120733781 is about 71559.3025469086. The cubic root of 5120733781 is about 1723.6300857612.

The spelling of 5120733781 in words is "five billion, one hundred twenty million, seven hundred thirty-three thousand, seven hundred eighty-one".