77814207660212 has 24 divisors (see below), whose sum is σ = 139345368668352. Its totient is φ = 38001292560000.

The previous prime is 77814207660209. The next prime is 77814207660251. The reversal of 77814207660212 is 21206670241877.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688337 + ... + 12494087.

It is an arithmetic number, because the mean of its divisors is an integer number (5806057027848).

Almost surely, 2^{77814207660212} is an apocalyptic number.

It is an amenable number.

77814207660212 is a deficient number, since it is larger than the sum of its proper divisors (61531161008140).

77814207660212 is a wasteful number, since it uses less digits than its factorization.

77814207660212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11844119 (or 11844117 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 77814207660212 in words is "seventy-seven trillion, eight hundred fourteen billion, two hundred seven million, six hundred sixty thousand, two hundred twelve".