70013555621 has 8 divisors (see below), whose sum is σ = 70723196544. Its totient is φ = 69304237200.

The previous prime is 70013555611. The next prime is 70013555671. The reversal of 70013555621 is 12655531007.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70013555621 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 (70013555611) 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, 368360 + ... + 525086.

It is an arithmetic number, because the mean of its divisors is an integer number (8840399568).

Almost surely, 2^70013555621 is an apocalyptic number.

It is an amenable number.

70013555621 is a deficient number, since it is larger than the sum of its proper divisors (709640923).

70013555621 is a wasteful number, since it uses less digits than its factorization.

70013555621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161251.

The product of its (nonzero) digits is 31500, while the sum is 35.

The spelling of 70013555621 in words is "seventy billion, thirteen million, five hundred fifty-five thousand, six hundred twenty-one".