70172998621 has 8 divisors (see below), whose sum is σ = 76630728384. Its totient is φ = 63728329920.

The previous prime is 70172998613. The next prime is 70172998723. The reversal of 70172998621 is 12689927107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70172998621 - 2³ = 70172998613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70172993621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254025 + ... + 3275518.

It is an arithmetic number, because the mean of its divisors is an integer number (9578841048).

Almost surely, 2^70172998621 is an apocalyptic number.

It is an amenable number.

70172998621 is a deficient number, since it is larger than the sum of its proper divisors (6457729763).

70172998621 is a wasteful number, since it uses less digits than its factorization.

70172998621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530531.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 70172998621 in words is "seventy billion, one hundred seventy-two million, nine hundred ninety-eight thousand, six hundred twenty-one".