70221769128 has 64 divisors (see below), whose sum is σ = 222926256000. Its totient is φ = 20063362176.

The previous prime is 70221769127. The next prime is 70221769181. The reversal of 70221769128 is 82196712207.

It is a happy number.

It is a super-2 number, since 2×70221769128² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70221769127) 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, 23219973 + ... + 23222996.

It is an arithmetic number, because the mean of its divisors is an integer number (3483222750).

Almost surely, 2^70221769128 is an apocalyptic number.

It is an amenable number.

70221769128 is an abundant number, since it is smaller than the sum of its proper divisors (152704486872).

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

70221769128 is a wasteful number, since it uses less digits than its factorization.

70221769128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46442991 (or 46442981 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 70221769128 in words is "seventy billion, two hundred twenty-one million, seven hundred sixty-nine thousand, one hundred twenty-eight".