77108390897 has 8 divisors (see below), whose sum is σ = 81171932160. Its totient is φ = 73045370160.

The previous prime is 77108390873. The next prime is 77108390903. The reversal of 77108390897 is 79809380177.

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

It is a cyclic number.

It is not a de Polignac number, because 77108390897 - 2⁶ = 77108390833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77108390197) 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, 194768 + ... + 438350.

It is an arithmetic number, because the mean of its divisors is an integer number (10146491520).

Almost surely, 2^77108390897 is an apocalyptic number.

It is an amenable number.

77108390897 is a deficient number, since it is larger than the sum of its proper divisors (4063541263).

77108390897 is a wasteful number, since it uses less digits than its factorization.

77108390897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260263.

The product of its (nonzero) digits is 5334336, while the sum is 59.

The spelling of 77108390897 in words is "seventy-seven billion, one hundred eight million, three hundred ninety thousand, eight hundred ninety-seven".