20402632441 has 2 divisors, whose sum is σ = 20402632442. Its totient is φ = 20402632440.

The previous prime is 20402632427. The next prime is 20402632447. The reversal of 20402632441 is 14423620402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19093712400 + 1308920041 = 138180^2 + 36179^2 .

It is a cyclic number.

It is not a de Polignac number, because 20402632441 - 2²¹ = 20400535289 is a prime.

It is not a weakly prime, because it can be changed into another prime (20402632447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201316220 + 10201316221.

It is an arithmetic number, because the mean of its divisors is an integer number (10201316221).

Almost surely, 2^20402632441 is an apocalyptic number.

It is an amenable number.

20402632441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402632441 is an equidigital number, since it uses as much as digits as its factorization.

20402632441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 20402632441 in words is "twenty billion, four hundred two million, six hundred thirty-two thousand, four hundred forty-one".