42655641504 has 144 divisors (see below), whose sum is σ = 131248234656. Its totient is φ = 12094118400.

The previous prime is 42655641499. The next prime is 42655641521. The reversal of 42655641504 is 40514655624.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 581614 + ... + 650834.

It is an arithmetic number, because the mean of its divisors is an integer number (911446074).

Almost surely, 2^42655641504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42655641504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65624117328).

42655641504 is an abundant number, since it is smaller than the sum of its proper divisors (88592593152).

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

42655641504 is a wasteful number, since it uses less digits than its factorization.

42655641504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69379 (or 69364 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 42655641504 in words is "forty-two billion, six hundred fifty-five million, six hundred forty-one thousand, five hundred four".