42947787835 has 4 divisors (see below), whose sum is σ = 51537345408. Its totient is φ = 34358230264.

The previous prime is 42947787821. The next prime is 42947787907. The reversal of 42947787835 is 53878774924.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42947787835 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4294778779 + ... + 4294778788.

It is an arithmetic number, because the mean of its divisors is an integer number (12884336352).

Almost surely, 2^42947787835 is an apocalyptic number.

42947787835 is a deficient number, since it is larger than the sum of its proper divisors (8589557573).

42947787835 is an equidigital number, since it uses as much as digits as its factorization.

42947787835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589557572.

The product of its digits is 94832640, while the sum is 64.

The spelling of 42947787835 in words is "forty-two billion, nine hundred forty-seven million, seven hundred eighty-seven thousand, eight hundred thirty-five".