6442874421534 has 48 divisors (see below), whose sum is σ = 14301396411120. Its totient is φ = 2095044731520.

The previous prime is 6442874421491. The next prime is 6442874421559. The reversal of 6442874421534 is 4351244782446.

6442874421534 is a `hidden beast` number, since 6 + 4 + 4 + 2 + 87 + 4 + 4 + 21 + 534 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7463032 + ... + 8281460.

It is an arithmetic number, because the mean of its divisors is an integer number (297945758565).

Almost surely, 2^{6442874421534} is an apocalyptic number.

6442874421534 is an abundant number, since it is smaller than the sum of its proper divisors (7858521989586).

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

6442874421534 is a wasteful number, since it uses less digits than its factorization.

6442874421534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829145 (or 829142 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 54.

The spelling of 6442874421534 in words is "six trillion, four hundred forty-two billion, eight hundred seventy-four million, four hundred twenty-one thousand, five hundred thirty-four".