38621420544 has 528 divisors, whose sum is σ = 125811698688. Its totient is φ = 10493263872.

The previous prime is 38621420533. The next prime is 38621420581. The reversal of 38621420544 is 44502412683.

It is a super-2 number, since 2×38621420544² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374965197 + ... + 374965299.

Almost surely, 2^38621420544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38621420544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62905849344).

38621420544 is an abundant number, since it is smaller than the sum of its proper divisors (87190278144).

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

38621420544 is a wasteful number, since it uses less digits than its factorization.

38621420544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 38621420544 in words is "thirty-eight billion, six hundred twenty-one million, four hundred twenty thousand, five hundred forty-four".