79774009660 has 24 divisors (see below), whose sum is σ = 167535995760. Its totient is φ = 31907589504.

The previous prime is 79774009649. The next prime is 79774009663. The reversal of 79774009660 is 6690047797.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79774009663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222336 + ... + 457144.

It is an arithmetic number, because the mean of its divisors is an integer number (6980666490).

Almost surely, 2^79774009660 is an apocalyptic number.

It is an amenable number.

79774009660 is an abundant number, since it is smaller than the sum of its proper divisors (87761986100).

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

79774009660 is a wasteful number, since it uses less digits than its factorization.

79774009660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251805 (or 251803 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 79774009660 in words is "seventy-nine billion, seven hundred seventy-four million, nine thousand, six hundred sixty".