79532663616 has 588 divisors, whose sum is σ = 289903997280. Its totient is φ = 21515880960.

The previous prime is 79532663611. The next prime is 79532663633. The reversal of 79532663616 is 61636623597.

79532663616 is a `hidden beast` number, since 7 + 9 + 532 + 66 + 36 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (588).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79532663611) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 43435821 + ... + 43437651.

Almost surely, 2^79532663616 is an apocalyptic number.

79532663616 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79532663616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144951998640).

79532663616 is an abundant number, since it is smaller than the sum of its proper divisors (210371333664).

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

79532663616 is a wasteful number, since it uses less digits than its factorization.

79532663616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1862 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 79532663616 in words is "seventy-nine billion, five hundred thirty-two million, six hundred sixty-three thousand, six hundred sixteen".