79941489540 has 96 divisors (see below), whose sum is σ = 244358674560. Its totient is φ = 19365964800.

The previous prime is 79941489533. The next prime is 79941489613. The reversal of 79941489540 is 4598414997.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 900760 + ... + 985520.

It is an arithmetic number, because the mean of its divisors is an integer number (2545402860).

Almost surely, 2^79941489540 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 79941489540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122179337280).

79941489540 is an abundant number, since it is smaller than the sum of its proper divisors (164417185020).

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

79941489540 is a wasteful number, since it uses less digits than its factorization.

79941489540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86213 (or 86211 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 79941489540 in words is "seventy-nine billion, nine hundred forty-one million, four hundred eighty-nine thousand, five hundred forty".