42851502997 has 4 divisors (see below), whose sum is σ = 45106845280. Its totient is φ = 40596160716.

The previous prime is 42851502923. The next prime is 42851503039. The reversal of 42851502997 is 79920515824.

42851502997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42851502997 - 2³⁵ = 8491764629 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 (42851502097) 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, 1127671113 + ... + 1127671150.

It is an arithmetic number, because the mean of its divisors is an integer number (11276711320).

Almost surely, 2^42851502997 is an apocalyptic number.

It is an amenable number.

42851502997 is a deficient number, since it is larger than the sum of its proper divisors (2255342283).

42851502997 is a wasteful number, since it uses less digits than its factorization.

42851502997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255342282.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 42851502997 in words is "forty-two billion, eight hundred fifty-one million, five hundred two thousand, nine hundred ninety-seven".