721777466272312 has 16 divisors (see below), whose sum is σ = 1382127063075360. Its totient is φ = 353210249452224.

The previous prime is 721777466272273. The next prime is 721777466272339. The reversal of 721777466272312 is 213272664777127.

It is a congruent number.

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, 959810460093 + ... + 959810460844.

It is an arithmetic number, because the mean of its divisors is an integer number (86382941442210).

Almost surely, 2^{721777466272312} is an apocalyptic number.

It is an amenable number.

721777466272312 is a deficient number, since it is larger than the sum of its proper divisors (660349596803048).

721777466272312 is a wasteful number, since it uses less digits than its factorization.

721777466272312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919620920990 (or 1919620920986 counting only the distinct ones).

The product of its digits is 116169984, while the sum is 64.

The spelling of 721777466272312 in words is "seven hundred twenty-one trillion, seven hundred seventy-seven billion, four hundred sixty-six million, two hundred seventy-two thousand, three hundred twelve".