38630447856 has 640 divisors, whose sum is σ = 150090393600. Its totient is φ = 9186877440.

The previous prime is 38630447831. The next prime is 38630447857. The reversal of 38630447856 is 65874403683.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38630447857) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 67891540 + ... + 67892108.

It is an arithmetic number, because the mean of its divisors is an integer number (234516240).

Almost surely, 2^38630447856 is an apocalyptic number.

38630447856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38630447856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75045196800).

38630447856 is an abundant number, since it is smaller than the sum of its proper divisors (111459945744).

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

38630447856 is a wasteful number, since it uses less digits than its factorization.

38630447856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 38630447856 in words is "thirty-eight billion, six hundred thirty million, four hundred forty-seven thousand, eight hundred fifty-six".