978028717239 has 24 divisors (see below), whose sum is σ = 1615546258560. Its totient is φ = 558519554448.

The previous prime is 978028717231. The next prime is 978028717241. The reversal of 978028717239 is 932717820879.

It is not a de Polignac number, because 978028717239 - 2³ = 978028717231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978028717231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4816377 + ... + 5015330.

It is an arithmetic number, because the mean of its divisors is an integer number (67314427440).

Almost surely, 2^978028717239 is an apocalyptic number.

978028717239 is a deficient number, since it is larger than the sum of its proper divisors (637517541321).

978028717239 is a wasteful number, since it uses less digits than its factorization.

978028717239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833299 (or 9833296 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 978028717239 in words is "nine hundred seventy-eight billion, twenty-eight million, seven hundred seventeen thousand, two hundred thirty-nine".