221415064242534 has 48 divisors (see below), whose sum is σ = 487866365288640. Its totient is φ = 72553692602160.

The previous prime is 221415064242529. The next prime is 221415064242539. The reversal of 221415064242534 is 435242460514122.

221415064242534 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 1 + 50 + 64 + 2 + 4 + 2 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (221415064242529) and next prime (221415064242539).

It is a self number, because there is not a number n which added to its sum of digits gives 221415064242534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221415064242539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243026869 + ... + 243936239.

It is an arithmetic number, because the mean of its divisors is an integer number (10163882610180).

Almost surely, 2^{221415064242534} is an apocalyptic number.

221415064242534 is an abundant number, since it is smaller than the sum of its proper divisors (266451301046106).

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

221415064242534 is a wasteful number, since it uses less digits than its factorization.

221415064242534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138705 (or 1138702 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 45.

The spelling of 221415064242534 in words is "two hundred twenty-one trillion, four hundred fifteen billion, sixty-four million, two hundred forty-two thousand, five hundred thirty-four".