77786971214 has 8 divisors (see below), whose sum is σ = 117194468328. Its totient is φ = 38722148440.

The previous prime is 77786971211. The next prime is 77786971231. The reversal of 77786971214 is 41217968777.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77786971211) 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, 85668017 + ... + 85668924.

It is an arithmetic number, because the mean of its divisors is an integer number (14649308541).

Almost surely, 2^77786971214 is an apocalyptic number.

77786971214 is a deficient number, since it is larger than the sum of its proper divisors (39407497114).

77786971214 is a wasteful number, since it uses less digits than its factorization.

77786971214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171337170.

The product of its digits is 8297856, while the sum is 59.

The spelling of 77786971214 in words is "seventy-seven billion, seven hundred eighty-six million, nine hundred seventy-one thousand, two hundred fourteen".