70408891991424 has 128 divisors (see below), whose sum is σ = 215702209324800. Its totient is φ = 19932268161024.

The previous prime is 70408891991423. The next prime is 70408891991513. The reversal of 70408891991424 is 42419919880407.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70408891991423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119861982 + ... + 120447965.

It is an arithmetic number, because the mean of its divisors is an integer number (1685173510350).

Almost surely, 2^{70408891991424} is an apocalyptic number.

It is an amenable number.

70408891991424 is an abundant number, since it is smaller than the sum of its proper divisors (145293317333376).

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

70408891991424 is a wasteful number, since it uses less digits than its factorization.

70408891991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240310080 (or 240310068 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 66.

The spelling of 70408891991424 in words is "seventy trillion, four hundred eight billion, eight hundred ninety-one million, nine hundred ninety-one thousand, four hundred twenty-four".