20215652007 has 4 divisors (see below), whose sum is σ = 26954202680. Its totient is φ = 13477101336.

The previous prime is 20215651997. The next prime is 20215652047. The reversal of 20215652007 is 70025651202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20215652007 - 2⁸ = 20215651751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215652047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369275332 + ... + 3369275337.

It is an arithmetic number, because the mean of its divisors is an integer number (6738550670).

Almost surely, 2^20215652007 is an apocalyptic number.

20215652007 is a deficient number, since it is larger than the sum of its proper divisors (6738550673).

20215652007 is an equidigital number, since it uses as much as digits as its factorization.

20215652007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738550672.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 20215652007 in words is "twenty billion, two hundred fifteen million, six hundred fifty-two thousand, seven".