4648181431021 has 16 divisors (see below), whose sum is σ = 4963901673600. Its totient is φ = 4342889947968.

The previous prime is 4648181430979. The next prime is 4648181431039. The reversal of 4648181431021 is 1201341818464.

It is a cyclic number.

It is not a de Polignac number, because 4648181431021 - 2²³ = 4648173042413 is a prime.

It is a super-2 number, since 2×4648181431021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4648181431721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10695666 + ... + 11121763.

It is an arithmetic number, because the mean of its divisors is an integer number (310243854600).

Almost surely, 2^{4648181431021} is an apocalyptic number.

It is an amenable number.

4648181431021 is a deficient number, since it is larger than the sum of its proper divisors (315720242579).

4648181431021 is a wasteful number, since it uses less digits than its factorization.

4648181431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21817668.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 4648181431021 in words is "four trillion, six hundred forty-eight billion, one hundred eighty-one million, four hundred thirty-one thousand, twenty-one".