20007515707 has 2 divisors, whose sum is σ = 20007515708. Its totient is φ = 20007515706.

The previous prime is 20007515663. The next prime is 20007515719. The reversal of 20007515707 is 70751570002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20007515707 - 2¹⁵ = 20007482939 is a prime.

It is not a weakly prime, because it can be changed into another prime (20007515207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003757853 + 10003757854.

It is an arithmetic number, because the mean of its divisors is an integer number (10003757854).

Almost surely, 2^20007515707 is an apocalyptic number.

20007515707 is a deficient number, since it is larger than the sum of its proper divisors (1).

20007515707 is an equidigital number, since it uses as much as digits as its factorization.

20007515707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17150, while the sum is 34.

The spelling of 20007515707 in words is "twenty billion, seven million, five hundred fifteen thousand, seven hundred seven".