4621421620987 has 2 divisors, whose sum is σ = 4621421620988. Its totient is φ = 4621421620986.

The previous prime is 4621421620973. The next prime is 4621421621023. The reversal of 4621421620987 is 7890261241264.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4621421620987 - 2⁷ = 4621421620859 is a prime.

It is a super-2 number, since 2×4621421620987² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4621421620927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310710810493 + 2310710810494.

It is an arithmetic number, because the mean of its divisors is an integer number (2310710810494).

Almost surely, 2^{4621421620987} is an apocalyptic number.

4621421620987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4621421620987 is an equidigital number, since it uses as much as digits as its factorization.

4621421620987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 4621421620987 in words is "four trillion, six hundred twenty-one billion, four hundred twenty-one million, six hundred twenty thousand, nine hundred eighty-seven".