221411761304672 has 48 divisors (see below), whose sum is σ = 467106634017072. Its totient is φ = 102938423377920.

The previous prime is 221411761304633. The next prime is 221411761304687. The reversal of 221411761304672 is 276403167114122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2451803729 + ... + 2451894032.

It is an arithmetic number, because the mean of its divisors is an integer number (9731388208689).

Almost surely, 2^{221411761304672} is an apocalyptic number.

It is an amenable number.

221411761304672 is an abundant number, since it is smaller than the sum of its proper divisors (245694872712400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221411761304672 is a wasteful number, since it uses less digits than its factorization.

221411761304672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903697871 (or 4903697863 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 221411761304672 in words is "two hundred twenty-one trillion, four hundred eleven billion, seven hundred sixty-one million, three hundred four thousand, six hundred seventy-two".