4626372481921 has 2 divisors, whose sum is σ = 4626372481922. Its totient is φ = 4626372481920.

The previous prime is 4626372481889. The next prime is 4626372481957. The reversal of 4626372481921 is 1291842736264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3459246609025 + 1167125872896 = 1859905^2 + 1080336^2 .

It is a cyclic number.

It is not a de Polignac number, because 4626372481921 - 2⁵ = 4626372481889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4626342481921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2313186240960 + 2313186240961.

It is an arithmetic number, because the mean of its divisors is an integer number (2313186240961).

Almost surely, 2^{4626372481921} is an apocalyptic number.

It is an amenable number.

4626372481921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4626372481921 is an equidigital number, since it uses as much as digits as its factorization.

4626372481921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 55.

The spelling of 4626372481921 in words is "four trillion, six hundred twenty-six billion, three hundred seventy-two million, four hundred eighty-one thousand, nine hundred twenty-one".