70609721512 has 64 divisors (see below), whose sum is σ = 150161356800. Its totient is φ = 30836376000.

The previous prime is 70609721477. The next prime is 70609721513. The reversal of 70609721512 is 21512790607.

It is a super-2 number, since 2×70609721512² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (70609721513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286087 + ... + 472297.

It is an arithmetic number, because the mean of its divisors is an integer number (2346271200).

Almost surely, 2^70609721512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70609721512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75080678400).

70609721512 is an abundant number, since it is smaller than the sum of its proper divisors (79551635288).

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

70609721512 is a wasteful number, since it uses less digits than its factorization.

70609721512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186398 (or 186394 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

It can be divided in two parts, 706097 and 21512, that added together give a square (727609 = 853²).

The spelling of 70609721512 in words is "seventy billion, six hundred nine million, seven hundred twenty-one thousand, five hundred twelve".