77764308254 has 4 divisors (see below), whose sum is σ = 116646462384. Its totient is φ = 38882154126.

The previous prime is 77764308221. The next prime is 77764308277. The reversal of 77764308254 is 45280346777.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77764308196 and 77764308205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19441077062 + ... + 19441077065.

It is an arithmetic number, because the mean of its divisors is an integer number (29161615596).

Almost surely, 2^77764308254 is an apocalyptic number.

77764308254 is a deficient number, since it is larger than the sum of its proper divisors (38882154130).

77764308254 is a wasteful number, since it uses less digits than its factorization.

77764308254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38882154129.

The product of its (nonzero) digits is 7902720, while the sum is 53.

The spelling of 77764308254 in words is "seventy-seven billion, seven hundred sixty-four million, three hundred eight thousand, two hundred fifty-four".