42567784765 has 16 divisors (see below), whose sum is σ = 55729238976. Its totient is φ = 30956089600.

The previous prime is 42567784751. The next prime is 42567784771. The reversal of 42567784765 is 56748776524.

It is not a de Polignac number, because 42567784765 - 2⁵ = 42567784733 is a prime.

It is a super-2 number, since 2×42567784765² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 1165674 + ... + 1201636.

It is an arithmetic number, because the mean of its divisors is an integer number (3483077436).

Almost surely, 2^42567784765 is an apocalyptic number.

It is an amenable number.

42567784765 is a deficient number, since it is larger than the sum of its proper divisors (13161454211).

42567784765 is a wasteful number, since it uses less digits than its factorization.

42567784765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57500.

The product of its digits is 79027200, while the sum is 61.

The spelling of 42567784765 in words is "forty-two billion, five hundred sixty-seven million, seven hundred eighty-four thousand, seven hundred sixty-five".