2151043515 has 12 divisors (see below), whose sum is σ = 3728475504. Its totient is φ = 1147223184.

The previous prime is 2151043493. The next prime is 2151043529. The reversal of 2151043515 is 5153401512.

2151043515 is a `hidden beast` number, since 215 + 1 + 0 + 435 + 15 = 666.

It is not a de Polignac number, because 2151043515 - 2¹⁵ = 2151010747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23900439 + ... + 23900528.

It is an arithmetic number, because the mean of its divisors is an integer number (310706292).

Almost surely, 2^2151043515 is an apocalyptic number.

2151043515 is a deficient number, since it is larger than the sum of its proper divisors (1577431989).

2151043515 is a wasteful number, since it uses less digits than its factorization.

2151043515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47800978 (or 47800975 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 2151043515 is about 46379.3436240747. The cubic root of 2151043515 is about 1290.8716571450.

It can be divided in two parts, 21510 and 43515, that added together give a square (65025 = 255²).

The spelling of 2151043515 in words is "two billion, one hundred fifty-one million, forty-three thousand, five hundred fifteen".