70953631221 has 64 divisors (see below), whose sum is σ = 113714979840. Its totient is φ = 38860631040.

The previous prime is 70953631193. The next prime is 70953631237. The reversal of 70953631221 is 12213635907.

It is a happy number.

It is not a de Polignac number, because 70953631221 - 2⁶ = 70953631157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70953631221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70953631291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1398331 + ... + 1448183.

It is an arithmetic number, because the mean of its divisors is an integer number (1776796560).

Almost surely, 2^70953631221 is an apocalyptic number.

It is an amenable number.

70953631221 is a deficient number, since it is larger than the sum of its proper divisors (42761348619).

70953631221 is a wasteful number, since it uses less digits than its factorization.

70953631221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49986.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 70953631221 in words is "seventy billion, nine hundred fifty-three million, six hundred thirty-one thousand, two hundred twenty-one".