720782341440 has 112 divisors (see below), whose sum is σ = 2615410234752. Its totient is φ = 164750247936.

The previous prime is 720782341423. The next prime is 720782341501. The reversal of 720782341440 is 44143287027.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 720782341392 and 720782341401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53622919 + ... + 53636358.

It is an arithmetic number, because the mean of its divisors is an integer number (23351877096).

Almost surely, 2^720782341440 is an apocalyptic number.

720782341440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

720782341440 is an abundant number, since it is smaller than the sum of its proper divisors (1894627893312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720782341440 is a wasteful number, since it uses less digits than its factorization.

720782341440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107259304 (or 107259294 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The spelling of 720782341440 in words is "seven hundred twenty billion, seven hundred eighty-two million, three hundred forty-one thousand, four hundred forty".