70221705776 has 10 divisors (see below), whose sum is σ = 136054554972. Its totient is φ = 35110852880.

The previous prime is 70221705773. The next prime is 70221705781. The reversal of 70221705776 is 67750712207.

It is a super-2 number, since 2×70221705776² (a number of 22 digits) contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194428290 + ... + 2194428321.

Almost surely, 2^70221705776 is an apocalyptic number.

It is an amenable number.

70221705776 is a deficient number, since it is larger than the sum of its proper divisors (65832849196).

70221705776 is a wasteful number, since it uses less digits than its factorization.

70221705776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388856619 (or 4388856613 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 44.

The spelling of 70221705776 in words is "seventy billion, two hundred twenty-one million, seven hundred five thousand, seven hundred seventy-six".