42015564544 has 36 divisors (see below), whose sum is σ = 83953346904. Its totient is φ = 20986155008.

The previous prime is 42015564527. The next prime is 42015564599. The reversal of 42015564544 is 44546551024.

It is a junction number, because it is equal to n+sod(n) for n = 42015564497 and 42015564506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166119 + ... + 334105.

It is an arithmetic number, because the mean of its divisors is an integer number (2332037414).

Almost surely, 2^42015564544 is an apocalyptic number.

It is an amenable number.

42015564544 is a deficient number, since it is larger than the sum of its proper divisors (41937782360).

42015564544 is an equidigital number, since it uses as much as digits as its factorization.

42015564544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168980 (or 168966 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 42015564544 in words is "forty-two billion, fifteen million, five hundred sixty-four thousand, five hundred forty-four".