221791508419934 has 16 divisors (see below), whose sum is σ = 333430380612000. Its totient is φ = 110648051426304.

The previous prime is 221791508419919. The next prime is 221791508420023. The reversal of 221791508419934 is 439914805197122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154134074 + ... + 155566370.

It is an arithmetic number, because the mean of its divisors is an integer number (20839398788250).

Almost surely, 2^{221791508419934} is an apocalyptic number.

221791508419934 is a deficient number, since it is larger than the sum of its proper divisors (111638872192066).

221791508419934 is a wasteful number, since it uses less digits than its factorization.

221791508419934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605187.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 221791508419934 in words is "two hundred twenty-one trillion, seven hundred ninety-one billion, five hundred eight million, four hundred nineteen thousand, nine hundred thirty-four".