6264421563420 has 120 divisors (see below), whose sum is σ = 19653744796224. Its totient is φ = 1670340507264.

The previous prime is 6264421563383. The next prime is 6264421563427. The reversal of 6264421563420 is 243651244626.

It is a happy number.

6264421563420 is a `hidden beast` number, since 6 + 2 + 6 + 4 + 4 + 2 + 1 + 5 + 634 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6264421563427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15952554 + ... + 16340526.

Almost surely, 2^{6264421563420} is an apocalyptic number.

6264421563420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6264421563420 is an abundant number, since it is smaller than the sum of its proper divisors (13389323232804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6264421563420 is a wasteful number, since it uses less digits than its factorization.

6264421563420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397961 (or 397950 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 6264421563420 in words is "six trillion, two hundred sixty-four billion, four hundred twenty-one million, five hundred sixty-three thousand, four hundred twenty".