221432747403492 has 24 divisors (see below), whose sum is σ = 574084900676000. Its totient is φ = 73810915801128.

The previous prime is 221432747403409. The next prime is 221432747403509. The reversal of 221432747403492 is 294304747234122.

221432747403492 is a `hidden beast` number, since 2 + 2 + 1 + 43 + 2 + 74 + 7 + 40 + 3 + 492 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 7 ways as a sum of consecutive naturals, for example, 1025151608242 + ... + 1025151608457.

Almost surely, 2^{221432747403492} is an apocalyptic number.

It is an amenable number.

221432747403492 is an abundant number, since it is smaller than the sum of its proper divisors (352652153272508).

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

221432747403492 is a wasteful number, since it uses less digits than its factorization.

221432747403492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050303216712 (or 2050303216704 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 54.

The spelling of 221432747403492 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, seven hundred forty-seven million, four hundred three thousand, four hundred ninety-two".