771082138272 has 24 divisors (see below), whose sum is σ = 2024090613216. Its totient is φ = 257027379392.

The previous prime is 771082138249. The next prime is 771082138327. The reversal of 771082138272 is 272831280177.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4016052708 + ... + 4016052899.

It is an arithmetic number, because the mean of its divisors is an integer number (84337108884).

Almost surely, 2^771082138272 is an apocalyptic number.

It is an amenable number.

771082138272 is an abundant number, since it is smaller than the sum of its proper divisors (1253008474944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771082138272 is a wasteful number, since it uses less digits than its factorization.

771082138272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8032105620 (or 8032105612 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 771082138272 in words is "seven hundred seventy-one billion, eighty-two million, one hundred thirty-eight thousand, two hundred seventy-two".