40421508601 has 2 divisors, whose sum is σ = 40421508602. Its totient is φ = 40421508600.

The previous prime is 40421508581. The next prime is 40421508613. The reversal of 40421508601 is 10680512404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38611857001 + 1809651600 = 196499^2 + 42540^2 .

It is a cyclic number.

It is not a de Polignac number, because 40421508601 - 2²¹ = 40419411449 is a prime.

It is not a weakly prime, because it can be changed into another prime (40424508601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210754300 + 20210754301.

It is an arithmetic number, because the mean of its divisors is an integer number (20210754301).

Almost surely, 2^40421508601 is an apocalyptic number.

It is an amenable number.

40421508601 is a deficient number, since it is larger than the sum of its proper divisors (1).

40421508601 is an equidigital number, since it uses as much as digits as its factorization.

40421508601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 40421508601 in words is "forty billion, four hundred twenty-one million, five hundred eight thousand, six hundred one".