42635253771 has 16 divisors (see below), whose sum is σ = 68905461120. Its totient is φ = 25839547560.

The previous prime is 42635253767. The next prime is 42635253779. The reversal of 42635253771 is 17735253624.

42635253771 is a `hidden beast` number, since 4 + 2 + 63 + 52 + 537 + 7 + 1 = 666.

It is not a de Polignac number, because 42635253771 - 2² = 42635253767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42635253779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71776225 + ... + 71776818.

It is an arithmetic number, because the mean of its divisors is an integer number (4306591320).

Almost surely, 2^42635253771 is an apocalyptic number.

42635253771 is a deficient number, since it is larger than the sum of its proper divisors (26270207349).

42635253771 is a wasteful number, since it uses less digits than its factorization.

42635253771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143553063 (or 143553057 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 42635253771 in words is "forty-two billion, six hundred thirty-five million, two hundred fifty-three thousand, seven hundred seventy-one".