21152651115 has 32 divisors (see below), whose sum is σ = 35949704256. Its totient is φ = 10583838720.

The previous prime is 21152651087. The next prime is 21152651131. The reversal of 21152651115 is 51115625112.

It is not a de Polignac number, because 21152651115 - 2¹⁶ = 21152585579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52696 + ... + 212325.

It is an arithmetic number, because the mean of its divisors is an integer number (1123428258).

Almost surely, 2^21152651115 is an apocalyptic number.

21152651115 is a deficient number, since it is larger than the sum of its proper divisors (14797053141).

21152651115 is a wasteful number, since it uses less digits than its factorization.

21152651115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265359.

The product of its digits is 3000, while the sum is 30.

The spelling of 21152651115 in words is "twenty-one billion, one hundred fifty-two million, six hundred fifty-one thousand, one hundred fifteen".