709985278320 has 80 divisors (see below), whose sum is σ = 2206761912960. Its totient is φ = 188829833472.

The previous prime is 709985278279. The next prime is 709985278361. The reversal of 709985278320 is 23872589907.

709985278320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (709985278279) and next prime (709985278361).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×709985278320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 3811774 + ... + 3993693.

It is an arithmetic number, because the mean of its divisors is an integer number (27584523912).

Almost surely, 2^709985278320 is an apocalyptic number.

It is an amenable number.

709985278320 is an abundant number, since it is smaller than the sum of its proper divisors (1496776634640).

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

709985278320 is a wasteful number, since it uses less digits than its factorization.

709985278320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805862 (or 7805856 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 709985278320 in words is "seven hundred nine billion, nine hundred eighty-five million, two hundred seventy-eight thousand, three hundred twenty".