2635666042 has 16 divisors (see below), whose sum is σ = 3985323264. Its totient is φ = 1307250000.

The previous prime is 2635666013. The next prime is 2635666063. The reversal of 2635666042 is 2406665362.

It is a junction number, because it is equal to n+sod(n) for n = 2635665986 and 2635666004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220992 + ... + 232612.

It is an arithmetic number, because the mean of its divisors is an integer number (249082704).

Almost surely, 2^2635666042 is an apocalyptic number.

2635666042 is a deficient number, since it is larger than the sum of its proper divisors (1349657222).

2635666042 is a wasteful number, since it uses less digits than its factorization.

2635666042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525.

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 2635666042 is about 51338.7382197888. The cubic root of 2635666042 is about 1381.3279316621.

The spelling of 2635666042 in words is "two billion, six hundred thirty-five million, six hundred sixty-six thousand, forty-two".