70221738355 has 16 divisors (see below), whose sum is σ = 84705328800. Its totient is φ = 55884961792.

The previous prime is 70221738331. The next prime is 70221738361. The reversal of 70221738355 is 55383712207.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70221738355 - 2¹⁷ = 70221607283 is a prime.

It is an unprimeable number.

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, 1425171 + ... + 1473619.

It is an arithmetic number, because the mean of its divisors is an integer number (5294083050).

Almost surely, 2^70221738355 is an apocalyptic number.

70221738355 is a deficient number, since it is larger than the sum of its proper divisors (14483590445).

70221738355 is a wasteful number, since it uses less digits than its factorization.

70221738355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49958.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 70221738355 in words is "seventy billion, two hundred twenty-one million, seven hundred thirty-eight thousand, three hundred fifty-five".