5991551995 has 64 divisors (see below), whose sum is σ = 8969304960. Its totient is φ = 3774873600.

The previous prime is 5991551987. The next prime is 5991552031.

5991551995 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5991551995 - 2³ = 5991551987 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7790971 + ... + 7791739.

It is an arithmetic number, because the mean of its divisors is an integer number (140145390).

Almost surely, 2^5991551995 is an apocalyptic number.

5991551995 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5991551995 is a deficient number, since it is larger than the sum of its proper divisors (2977752965).

5991551995 is a wasteful number, since it uses less digits than its factorization.

5991551995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its digits is 4100625, while the sum is 58.

The square root of 5991551995 is about 77405.1160776857. The cubic root of 5991551995 is about 1816.2673564846.

The spelling of 5991551995 in words is "five billion, nine hundred ninety-one million, five hundred fifty-one thousand, nine hundred ninety-five".