70705110640 has 20 divisors (see below), whose sum is σ = 164389382424. Its totient is φ = 28282044224.

The previous prime is 70705110629. The next prime is 70705110643. The reversal of 70705110640 is 4601150707.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×70705110640² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70705110643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441906862 + ... + 441907021.

Almost surely, 2^70705110640 is an apocalyptic number.

It is an amenable number.

70705110640 is an abundant number, since it is smaller than the sum of its proper divisors (93684271784).

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

70705110640 is a wasteful number, since it uses less digits than its factorization.

70705110640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883813896 (or 883813890 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 70705110640 in words is "seventy billion, seven hundred five million, one hundred ten thousand, six hundred forty".