70991211432 has 128 divisors (see below), whose sum is σ = 184860144000. Its totient is φ = 22691343360.

The previous prime is 70991211427. The next prime is 70991211433. The reversal of 70991211432 is 23411219907.

It is a super-3 number, since 3×70991211432³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (70991211433) 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 31 ways as a sum of consecutive naturals, for example, 100128294 + ... + 100129002.

It is an arithmetic number, because the mean of its divisors is an integer number (1444219875).

Almost surely, 2^70991211432 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 70991211432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92430072000).

70991211432 is an abundant number, since it is smaller than the sum of its proper divisors (113868932568).

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

70991211432 is a wasteful number, since it uses less digits than its factorization.

70991211432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 70991211432 in words is "seventy billion, nine hundred ninety-one million, two hundred eleven thousand, four hundred thirty-two".