99077760661 has 16 divisors (see below), whose sum is σ = 111050009280. Its totient is φ = 87631188480.

The previous prime is 99077760659. The next prime is 99077760671. The reversal of 99077760661 is 16606777099.

It is not a de Polignac number, because 99077760661 - 2¹ = 99077760659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99077760596 and 99077760605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99077760671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723966 + ... + 849871.

It is an arithmetic number, because the mean of its divisors is an integer number (6940625580).

Almost surely, 2^99077760661 is an apocalyptic number.

It is an amenable number.

99077760661 is a deficient number, since it is larger than the sum of its proper divisors (11972248619).

99077760661 is a wasteful number, since it uses less digits than its factorization.

99077760661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574004.

The product of its (nonzero) digits is 6001128, while the sum is 58.

The spelling of 99077760661 in words is "ninety-nine billion, seventy-seven million, seven hundred sixty thousand, six hundred sixty-one".