2151551512 has 16 divisors (see below), whose sum is σ = 4400901000. Its totient is φ = 977977920.

The previous prime is 2151551419. The next prime is 2151551531.

2151551512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2151551512² = 9258347817578972288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12224637 + ... + 12224812.

Almost surely, 2^2151551512 is an apocalyptic number.

2151551512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2151551512 is an abundant number, since it is smaller than the sum of its proper divisors (2249349488).

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

2151551512 is a wasteful number, since it uses less digits than its factorization.

2151551512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24449466 (or 24449462 counting only the distinct ones).

The product of its digits is 2500, while the sum is 28.

The square root of 2151551512 is about 46384.8198444276. The cubic root of 2151551512 is about 1290.9732678764.

The spelling of 2151551512 in words is "two billion, one hundred fifty-one million, five hundred fifty-one thousand, five hundred twelve".