77728487072314 has 64 divisors (see below), whose sum is σ = 138081219696000. Its totient is φ = 32489697542400.

The previous prime is 77728487072273. The next prime is 77728487072317. The reversal of 77728487072314 is 41327078482777.

It is a self number, because there is not a number n which added to its sum of digits gives 77728487072314.

It is not an unprimeable number, because it can be changed into a prime (77728487072317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25412944 + ... + 28306795.

It is an arithmetic number, because the mean of its divisors is an integer number (2157519057750).

Almost surely, 2^{77728487072314} is an apocalyptic number.

77728487072314 is a deficient number, since it is larger than the sum of its proper divisors (60352732623686).

77728487072314 is a wasteful number, since it uses less digits than its factorization.

77728487072314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53719903.

The product of its (nonzero) digits is 206524416, while the sum is 67.

The spelling of 77728487072314 in words is "seventy-seven trillion, seven hundred twenty-eight billion, four hundred eighty-seven million, seventy-two thousand, three hundred fourteen".