20988701407 has 2 divisors, whose sum is σ = 20988701408. Its totient is φ = 20988701406.

The previous prime is 20988701401. The next prime is 20988701411. The reversal of 20988701407 is 70410788902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20988701407 - 2²⁷ = 20854483679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20988701401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10494350703 + 10494350704.

It is an arithmetic number, because the mean of its divisors is an integer number (10494350704).

Almost surely, 2^20988701407 is an apocalyptic number.

20988701407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20988701407 is an equidigital number, since it uses as much as digits as its factorization.

20988701407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 20988701407 in words is "twenty billion, nine hundred eighty-eight million, seven hundred one thousand, four hundred seven".