77101604999 has 4 divisors (see below), whose sum is σ = 77103005880. Its totient is φ = 77100204120.

The previous prime is 77101604953. The next prime is 77101605017. The reversal of 77101604999 is 99940610177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99940610177 = 2129 ⋅46942513.

It is a cyclic number.

It is not a de Polignac number, because 77101604999 - 2¹² = 77101600903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77101604999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77101604299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614357 + ... + 729134.

It is an arithmetic number, because the mean of its divisors is an integer number (19275751470).

Almost surely, 2^77101604999 is an apocalyptic number.

77101604999 is a deficient number, since it is larger than the sum of its proper divisors (1400881).

77101604999 is a wasteful number, since it uses less digits than its factorization.

77101604999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400880.

The product of its (nonzero) digits is 857304, while the sum is 53.

The spelling of 77101604999 in words is "seventy-seven billion, one hundred one million, six hundred four thousand, nine hundred ninety-nine".