20601615907 has 2 divisors, whose sum is σ = 20601615908. Its totient is φ = 20601615906.

The previous prime is 20601615877. The next prime is 20601615911. The reversal of 20601615907 is 70951610602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20601615907 - 2¹⁵ = 20601583139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20601615997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10300807953 + 10300807954.

It is an arithmetic number, because the mean of its divisors is an integer number (10300807954).

Almost surely, 2^20601615907 is an apocalyptic number.

20601615907 is a deficient number, since it is larger than the sum of its proper divisors (1).

20601615907 is an equidigital number, since it uses as much as digits as its factorization.

20601615907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 20601615907 in words is "twenty billion, six hundred one million, six hundred fifteen thousand, nine hundred seven".