5111511984 has 60 divisors (see below), whose sum is σ = 14654056872. Its totient is φ = 1662278400.

The previous prime is 5111511971. The next prime is 5111511997. The reversal of 5111511984 is 4891151115.

5111511984 is a `hidden beast` number, since 51 + 1 + 1 + 511 + 98 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (5111511971) and next prime (5111511997).

It is a super-2 number, since 2×5111511984² = 52255109525151232512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 426982 + ... + 438789.

Almost surely, 2^5111511984 is an apocalyptic number.

It is an amenable number.

5111511984 is an abundant number, since it is smaller than the sum of its proper divisors (9542544888).

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

5111511984 is a wasteful number, since it uses less digits than its factorization.

5111511984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865826 (or 865817 counting only the distinct ones).

The product of its digits is 7200, while the sum is 36.

The square root of 5111511984 is about 71494.8388626760. The cubic root of 5111511984 is about 1722.5947837515.

The spelling of 5111511984 in words is "five billion, one hundred eleven million, five hundred eleven thousand, nine hundred eighty-four".