70221705775 has 96 divisors (see below), whose sum is σ = 103015281600. Its totient is φ = 47006023680.

The previous prime is 70221705773. The next prime is 70221705781. The reversal of 70221705775 is 57750712207.

It is not a de Polignac number, because 70221705775 - 2¹ = 70221705773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70221705773) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17340951 + ... + 17344999.

It is an arithmetic number, because the mean of its divisors is an integer number (1073075850).

Almost surely, 2^70221705775 is an apocalyptic number.

70221705775 is a deficient number, since it is larger than the sum of its proper divisors (32793575825).

70221705775 is a wasteful number, since it uses less digits than its factorization.

70221705775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 240100, while the sum is 43.

The spelling of 70221705775 in words is "seventy billion, two hundred twenty-one million, seven hundred five thousand, seven hundred seventy-five".