401653266613 has 4 divisors (see below), whose sum is σ = 409231630188. Its totient is φ = 394074903040.

The previous prime is 401653266559. The next prime is 401653266667. The reversal of 401653266613 is 316662356104.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (401653266559) and next prime (401653266667).

It can be written as a sum of positive squares in 2 ways, for example, as 317354208964 + 84299057649 = 563342^2 + 290343^2 .

It is a cyclic number.

It is not a de Polignac number, because 401653266613 - 2³⁷ = 264214313141 is a prime.

It is a super-2 number, since 2×401653266613² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401653266613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401653266013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3789181708 + ... + 3789181813.

It is an arithmetic number, because the mean of its divisors is an integer number (102307907547).

Almost surely, 2^401653266613 is an apocalyptic number.

It is an amenable number.

401653266613 is a deficient number, since it is larger than the sum of its proper divisors (7578363575).

401653266613 is an equidigital number, since it uses as much as digits as its factorization.

401653266613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7578363574.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 401653266613 in words is "four hundred one billion, six hundred fifty-three million, two hundred sixty-six thousand, six hundred thirteen".