78016742980 has 72 divisors (see below), whose sum is σ = 182983377024. Its totient is φ = 27709819200.

The previous prime is 78016742963. The next prime is 78016742981. The reversal of 78016742980 is 8924761087.

It is a super-2 number, since 2×78016742980² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78016742981) 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, 310885 + ... + 502675.

It is an arithmetic number, because the mean of its divisors is an integer number (2541435792).

Almost surely, 2^78016742980 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 78016742980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91491688512).

78016742980 is an abundant number, since it is smaller than the sum of its proper divisors (104966634044).

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

78016742980 is a wasteful number, since it uses less digits than its factorization.

78016742980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191897 (or 191852 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 78016742980 in words is "seventy-eight billion, sixteen million, seven hundred forty-two thousand, nine hundred eighty".