20325204971 has 2 divisors, whose sum is σ = 20325204972. Its totient is φ = 20325204970.

The previous prime is 20325204959. The next prime is 20325204979. The reversal of 20325204971 is 17940252302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20325204971 - 2²² = 20321010667 is a prime.

It is a super-2 number, since 2×20325204971² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20325204979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162602485 + 10162602486.

It is an arithmetic number, because the mean of its divisors is an integer number (10162602486).

Almost surely, 2^20325204971 is an apocalyptic number.

20325204971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20325204971 is an equidigital number, since it uses as much as digits as its factorization.

20325204971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20325204971 in words is "twenty billion, three hundred twenty-five million, two hundred four thousand, nine hundred seventy-one".