42772556047 has 4 divisors (see below), whose sum is σ = 46062752680. Its totient is φ = 39482359416.

The previous prime is 42772556041. The next prime is 42772556051. The reversal of 42772556047 is 74065527724.

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

It is a cyclic number.

It is not a de Polignac number, because 42772556047 - 2¹⁵ = 42772523279 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 (42772556041) 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, 1645098297 + ... + 1645098322.

It is an arithmetic number, because the mean of its divisors is an integer number (11515688170).

Almost surely, 2^42772556047 is an apocalyptic number.

42772556047 is a deficient number, since it is larger than the sum of its proper divisors (3290196633).

42772556047 is a wasteful number, since it uses less digits than its factorization.

42772556047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290196632.

The product of its (nonzero) digits is 3292800, while the sum is 49.

The spelling of 42772556047 in words is "forty-two billion, seven hundred seventy-two million, five hundred fifty-six thousand, forty-seven".