709332020128 has 24 divisors (see below), whose sum is σ = 1444652499780. Its totient is φ = 342436147200.

The previous prime is 709332020107. The next prime is 709332020129. The reversal of 709332020128 is 821020233907.

It can be written as a sum of positive squares in 2 ways, for example, as 688587955344 + 20744064784 = 829812^2 + 144028^2 .

It is not an unprimeable number, because it can be changed into a prime (709332020129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382182273 + ... + 382184128.

Almost surely, 2^709332020128 is an apocalyptic number.

It is an amenable number.

709332020128 is an abundant number, since it is smaller than the sum of its proper divisors (735320479652).

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

709332020128 is a wasteful number, since it uses less digits than its factorization.

709332020128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764366440 (or 764366432 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 709332020128 in words is "seven hundred nine billion, three hundred thirty-two million, twenty thousand, one hundred twenty-eight".