720634920442 has 16 divisors (see below), whose sum is σ = 1093165476480. Its totient is φ = 356246928928.

The previous prime is 720634920413. The next prime is 720634920451. The reversal of 720634920442 is 244029436027.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978463 + ... + 3211309.

It is an arithmetic number, because the mean of its divisors is an integer number (68322842280).

Almost surely, 2^720634920442 is an apocalyptic number.

720634920442 is a deficient number, since it is larger than the sum of its proper divisors (372530556038).

720634920442 is a wasteful number, since it uses less digits than its factorization.

720634920442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250325.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 720634920442 in words is "seven hundred twenty billion, six hundred thirty-four million, nine hundred twenty thousand, four hundred forty-two".