70728209358 has 32 divisors (see below), whose sum is σ = 142675325856. Its totient is φ = 23373754368.

The previous prime is 70728209339. The next prime is 70728209437. The reversal of 70728209358 is 85390282707.

It is a self number, because there is not a number n which added to its sum of digits gives 70728209358.

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, 235066 + ... + 443522.

It is an arithmetic number, because the mean of its divisors is an integer number (4458603933).

Almost surely, 2^70728209358 is an apocalyptic number.

70728209358 is an abundant number, since it is smaller than the sum of its proper divisors (71947116498).

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

70728209358 is a wasteful number, since it uses less digits than its factorization.

70728209358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208948.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 70728209358 in words is "seventy billion, seven hundred twenty-eight million, two hundred nine thousand, three hundred fifty-eight".