42646780111 has 4 divisors (see below), whose sum is σ = 45927301672. Its totient is φ = 39366258552.

The previous prime is 42646780081. The next prime is 42646780139. The reversal of 42646780111 is 11108764624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42646780111 - 2²³ = 42638391503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646780151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640260761 + ... + 1640260786.

It is an arithmetic number, because the mean of its divisors is an integer number (11481825418).

Almost surely, 2^42646780111 is an apocalyptic number.

42646780111 is a deficient number, since it is larger than the sum of its proper divisors (3280521561).

42646780111 is a wasteful number, since it uses less digits than its factorization.

42646780111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280521560.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 42646780111 in words is "forty-two billion, six hundred forty-six million, seven hundred eighty thousand, one hundred eleven".