139478864448 has 672 divisors, whose sum is σ = 486374318080. Its totient is φ = 34488115200.

The previous prime is 139478864429. The next prime is 139478864453. The reversal of 139478864448 is 844468874931.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 368017923 + ... + 368018301.

Almost surely, 2^139478864448 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 139478864448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243187159040).

139478864448 is an abundant number, since it is smaller than the sum of its proper divisors (346895453632).

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

139478864448 is a wasteful number, since it uses less digits than its factorization.

139478864448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 506 counting only the distinct ones).

The product of its digits is 148635648, while the sum is 66.

The spelling of 139478864448 in words is "one hundred thirty-nine billion, four hundred seventy-eight million, eight hundred sixty-four thousand, four hundred forty-eight".