9902459023601 has 2 divisors, whose sum is σ = 9902459023602. Its totient is φ = 9902459023600.

The previous prime is 9902459023559. The next prime is 9902459023637. The reversal of 9902459023601 is 1063209542099.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7859045953201 + 2043413070400 = 2803399^2 + 1429480^2 .

It is an emirp because it is prime and its reverse (1063209542099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9902459023601 - 2³⁴ = 9885279154417 is a prime.

It is a super-3 number, since 3×9902459023601³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9902459023601.

It is not a weakly prime, because it can be changed into another prime (9902459023651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951229511800 + 4951229511801.

It is an arithmetic number, because the mean of its divisors is an integer number (4951229511801).

Almost surely, 2^{9902459023601} is an apocalyptic number.

It is an amenable number.

9902459023601 is a deficient number, since it is larger than the sum of its proper divisors (1).

9902459023601 is an equidigital number, since it uses as much as digits as its factorization.

9902459023601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 9902459023601 in words is "nine trillion, nine hundred two billion, four hundred fifty-nine million, twenty-three thousand, six hundred one".