70644703493 has 24 divisors (see below), whose sum is σ = 90245270016. Its totient is φ = 54091627200.

The previous prime is 70644703489. The next prime is 70644703499. The reversal of 70644703493 is 39430744607.

It is not a de Polignac number, because 70644703493 - 2² = 70644703489 is a prime.

It is a super-2 number, since 2×70644703493² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70644703499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926498 + ... + 999843.

It is an arithmetic number, because the mean of its divisors is an integer number (3760219584).

Almost surely, 2^70644703493 is an apocalyptic number.

It is an amenable number.

70644703493 is a deficient number, since it is larger than the sum of its proper divisors (19600566523).

70644703493 is a wasteful number, since it uses less digits than its factorization.

70644703493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926405 (or 1926392 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 70644703493 in words is "seventy billion, six hundred forty-four million, seven hundred three thousand, four hundred ninety-three".