630260072021 has 4 divisors (see below), whose sum is σ = 657662683872. Its totient is φ = 602857460172.

The previous prime is 630260071979. The next prime is 630260072059. The reversal of 630260072021 is 120270062036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630260072021 - 2³⁸ = 355382165077 is a prime.

It is a super-2 number, since 2×630260072021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630260272021) 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, 13701305891 + ... + 13701305936.

It is an arithmetic number, because the mean of its divisors is an integer number (164415670968).

Almost surely, 2^630260072021 is an apocalyptic number.

It is an amenable number.

630260072021 is a deficient number, since it is larger than the sum of its proper divisors (27402611851).

630260072021 is a wasteful number, since it uses less digits than its factorization.

630260072021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27402611850.

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 630260072021 in words is "six hundred thirty billion, two hundred sixty million, seventy-two thousand, twenty-one".