42166523564 has 48 divisors (see below), whose sum is σ = 82778008320. Its totient is φ = 18625440960.

The previous prime is 42166523557. The next prime is 42166523593. The reversal of 42166523564 is 46532566124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330697 + ... + 1362015.

It is an arithmetic number, because the mean of its divisors is an integer number (1724541840).

Almost surely, 2^42166523564 is an apocalyptic number.

42166523564 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42166523564 is a deficient number, since it is larger than the sum of its proper divisors (40611484756).

42166523564 is a wasteful number, since it uses less digits than its factorization.

42166523564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32198 (or 32196 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 44.

The spelling of 42166523564 in words is "forty-two billion, one hundred sixty-six million, five hundred twenty-three thousand, five hundred sixty-four".