772816058421 has 16 divisors (see below), whose sum is σ = 1125275664960. Its totient is φ = 467881877120.

The previous prime is 772816058387. The next prime is 772816058423. The reversal of 772816058421 is 124850618277.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 772816058421 - 2¹¹ = 772816056373 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772816058423) 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, 12255366 + ... + 12318263.

It is an arithmetic number, because the mean of its divisors is an integer number (70329729060).

Almost surely, 2^772816058421 is an apocalyptic number.

It is an amenable number.

772816058421 is a deficient number, since it is larger than the sum of its proper divisors (352459606539).

772816058421 is a wasteful number, since it uses less digits than its factorization.

772816058421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24574596.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 772816058421 in words is "seven hundred seventy-two billion, eight hundred sixteen million, fifty-eight thousand, four hundred twenty-one".