42778486135 has 16 divisors (see below), whose sum is σ = 64001060352. Its totient is φ = 26667108000.

The previous prime is 42778486097. The next prime is 42778486141. The reversal of 42778486135 is 53168487724.

It is not a de Polignac number, because 42778486135 - 2⁷ = 42778486007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 55556091 + ... + 55556860.

It is an arithmetic number, because the mean of its divisors is an integer number (4000066272).

Almost surely, 2^42778486135 is an apocalyptic number.

42778486135 is a deficient number, since it is larger than the sum of its proper divisors (21222574217).

42778486135 is a wasteful number, since it uses less digits than its factorization.

42778486135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111112974.

The product of its digits is 9031680, while the sum is 55.

The spelling of 42778486135 in words is "forty-two billion, seven hundred seventy-eight million, four hundred eighty-six thousand, one hundred thirty-five".