70712117712 has 90 divisors (see below), whose sum is σ = 210221526918. Its totient is φ = 22184180736.

The previous prime is 70712117659. The next prime is 70712117719. The reversal of 70712117712 is 21771121707.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 45537852816 + 25174264896 = 213396^2 + 158664^2 .

It is a super-2 number, since 2×70712117712² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70712117719) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 807963 + ... + 891194.

Almost surely, 2^70712117712 is an apocalyptic number.

70712117712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70712117712 is an abundant number, since it is smaller than the sum of its proper divisors (139509409206).

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

70712117712 is a wasteful number, since it uses less digits than its factorization.

70712117712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699205 (or 1699179 counting only the distinct ones).

The product of its (nonzero) digits is 9604, while the sum is 36.

The spelling of 70712117712 in words is "seventy billion, seven hundred twelve million, one hundred seventeen thousand, seven hundred twelve".