772946857971 has 12 divisors (see below), whose sum is σ = 1116486658872. Its totient is φ = 515294275776.

The previous prime is 772946857919. The next prime is 772946858027. The reversal of 772946857971 is 179758649277.

772946857971 is a `hidden beast` number, since 7 + 7 + 2 + 9 + 46 + 8 + 579 + 7 + 1 = 666.

It is not a de Polignac number, because 772946857971 - 2¹⁴ = 772946841587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 772946857971.

It is not an unprimeable number, because it can be changed into a prime (772946852971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1859995 + ... + 2237291.

It is an arithmetic number, because the mean of its divisors is an integer number (93040554906).

Almost surely, 2^772946857971 is an apocalyptic number.

772946857971 is a deficient number, since it is larger than the sum of its proper divisors (343539800901).

772946857971 is a wasteful number, since it uses less digits than its factorization.

772946857971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604930 (or 604927 counting only the distinct ones).

The product of its digits is 373403520, while the sum is 72.

The spelling of 772946857971 in words is "seven hundred seventy-two billion, nine hundred forty-six million, eight hundred fifty-seven thousand, nine hundred seventy-one".