77954427199 has 8 divisors (see below), whose sum is σ = 85179930192. Its totient is φ = 70752047040.

The previous prime is 77954427139. The next prime is 77954427247. The reversal of 77954427199 is 99172445977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77954427199 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 77954427199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77954427139) 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, 5773654 + ... + 5787139.

It is an arithmetic number, because the mean of its divisors is an integer number (10647491274).

Almost surely, 2^77954427199 is an apocalyptic number.

77954427199 is a deficient number, since it is larger than the sum of its proper divisors (7225502993).

77954427199 is a wasteful number, since it uses less digits than its factorization.

77954427199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11561417.

The product of its digits is 40007520, while the sum is 64.

The spelling of 77954427199 in words is "seventy-seven billion, nine hundred fifty-four million, four hundred twenty-seven thousand, one hundred ninety-nine".