748447639920 has 480 divisors, whose sum is σ = 2764050464448. Its totient is φ = 187567570944.

The previous prime is 748447639913. The next prime is 748447639939. The reversal of 748447639920 is 29936744847.

748447639920 is a `hidden beast` number, since 7 + 48 + 4 + 476 + 39 + 92 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 309658552 + ... + 309660968.

Almost surely, 2^748447639920 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 748447639920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382025232224).

748447639920 is an abundant number, since it is smaller than the sum of its proper divisors (2015602824528).

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

748447639920 is a wasteful number, since it uses less digits than its factorization.

748447639920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 748447639920 in words is "seven hundred forty-eight billion, four hundred forty-seven million, six hundred thirty-nine thousand, nine hundred twenty".