721242694412 has 6 divisors (see below), whose sum is σ = 1262174715228. Its totient is φ = 360621347204.

The previous prime is 721242694397. The next prime is 721242694453. The reversal of 721242694412 is 214496242127.

721242694412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90155336798 + ... + 90155336805.

It is an arithmetic number, because the mean of its divisors is an integer number (210362452538).

Almost surely, 2^721242694412 is an apocalyptic number.

It is an amenable number.

721242694412 is a deficient number, since it is larger than the sum of its proper divisors (540932020816).

721242694412 is a wasteful number, since it uses less digits than its factorization.

721242694412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180310673607 (or 180310673605 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The spelling of 721242694412 in words is "seven hundred twenty-one billion, two hundred forty-two million, six hundred ninety-four thousand, four hundred twelve".