42500061551111 has 4 divisors (see below), whose sum is σ = 42500436844800. Its totient is φ = 42499686257424.

The previous prime is 42500061551069. The next prime is 42500061551153. The reversal of 42500061551111 is 11115516000524.

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

It is an interprime number because it is at equal distance from previous prime (42500061551069) and next prime (42500061551153).

It is a cyclic number.

It is not a de Polignac number, because 42500061551111 - 2¹⁸ = 42500061288967 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 (42500061251111) 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, 187476926 + ... + 187703483.

It is an arithmetic number, because the mean of its divisors is an integer number (10625109211200).

Almost surely, 2^{42500061551111} is an apocalyptic number.

42500061551111 is a deficient number, since it is larger than the sum of its proper divisors (375293689).

42500061551111 is a wasteful number, since it uses less digits than its factorization.

42500061551111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375293688.

The product of its (nonzero) digits is 6000, while the sum is 32.

Adding to 42500061551111 its reverse (11115516000524), we get a palindrome (53615577551635).

The spelling of 42500061551111 in words is "forty-two trillion, five hundred billion, sixty-one million, five hundred fifty-one thousand, one hundred eleven".