20469879151 has 2 divisors, whose sum is σ = 20469879152. Its totient is φ = 20469879150.

The previous prime is 20469879137. The next prime is 20469879161. The reversal of 20469879151 is 15197896402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20469879151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20469879161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10234939575 + 10234939576.

It is an arithmetic number, because the mean of its divisors is an integer number (10234939576).

Almost surely, 2^20469879151 is an apocalyptic number.

20469879151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20469879151 is an equidigital number, since it uses as much as digits as its factorization.

20469879151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 20469879151 in words is "twenty billion, four hundred sixty-nine million, eight hundred seventy-nine thousand, one hundred fifty-one".