78958877280 has 384 divisors, whose sum is σ = 270722124288. Its totient is φ = 19266895872.

The previous prime is 78958877279. The next prime is 78958877281. The reversal of 78958877280 is 8277885987.

It is an interprime number because it is at equal distance from previous prime (78958877279) and next prime (78958877281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78958877281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107719794 + ... + 107720526.

It is an arithmetic number, because the mean of its divisors is an integer number (705005532).

Almost surely, 2^78958877280 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 78958877280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135361062144).

78958877280 is an abundant number, since it is smaller than the sum of its proper divisors (191763247008).

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

78958877280 is a wasteful number, since it uses less digits than its factorization.

78958877280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 69.

The spelling of 78958877280 in words is "seventy-eight billion, nine hundred fifty-eight million, eight hundred seventy-seven thousand, two hundred eighty".