202102456401 has 8 divisors (see below), whose sum is σ = 299411046560. Its totient is φ = 134734970916.

The previous prime is 202102456397. The next prime is 202102456411. The reversal of 202102456401 is 104654201202.

202102456401 is a `hidden beast` number, since 2 + 0 + 2 + 10 + 2 + 4 + 5 + 640 + 1 = 666.

It is not a de Polignac number, because 202102456401 - 2² = 202102456397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7485276163 = 202102456401 / (2 + 0 + 2 + 1 + 0 + 2 + 4 + 5 + 6 + 4 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202102456411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742638055 + ... + 3742638108.

It is an arithmetic number, because the mean of its divisors is an integer number (37426380820).

Almost surely, 2^202102456401 is an apocalyptic number.

It is an amenable number.

202102456401 is a deficient number, since it is larger than the sum of its proper divisors (97308590159).

202102456401 is an equidigital number, since it uses as much as digits as its factorization.

202102456401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485276172 (or 7485276166 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 202102456401 its reverse (104654201202), we get a palindrome (306756657603).

It can be divided in two parts, 202102 and 456401, that added together give a cube (658503 = 87³).

The spelling of 202102456401 in words is "two hundred two billion, one hundred two million, four hundred fifty-six thousand, four hundred one".