5621236154261 has 24 divisors (see below), whose sum is σ = 7043399695584. Its totient is φ = 4446679960800.

The previous prime is 5621236154257. The next prime is 5621236154269. The reversal of 5621236154261 is 1624516321265.

It is not a de Polignac number, because 5621236154261 - 2² = 5621236154257 is a prime.

It is a super-2 number, since 2×5621236154261² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621236154269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2304986 + ... + 4068836.

It is an arithmetic number, because the mean of its divisors is an integer number (293474987316).

Almost surely, 2^{5621236154261} is an apocalyptic number.

It is an amenable number.

5621236154261 is a deficient number, since it is larger than the sum of its proper divisors (1422163541323).

5621236154261 is a wasteful number, since it uses less digits than its factorization.

5621236154261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768881 (or 1768874 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 5621236154261 in words is "five trillion, six hundred twenty-one billion, two hundred thirty-six million, one hundred fifty-four thousand, two hundred sixty-one".