64771777214 has 32 divisors (see below), whose sum is σ = 109591937280. Its totient is φ = 28528647552.

The previous prime is 64771777183. The next prime is 64771777219. The reversal of 64771777214 is 41277717746.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64771777219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550394 + ... + 657629.

It is an arithmetic number, because the mean of its divisors is an integer number (3424748040).

Almost surely, 2^64771777214 is an apocalyptic number.

64771777214 is a deficient number, since it is larger than the sum of its proper divisors (44820160066).

64771777214 is a wasteful number, since it uses less digits than its factorization.

64771777214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208144.

The product of its digits is 3226944, while the sum is 53.

The spelling of 64771777214 in words is "sixty-four billion, seven hundred seventy-one million, seven hundred seventy-seven thousand, two hundred fourteen".