2012855647 has 4 divisors (see below), whose sum is σ = 2195842536. Its totient is φ = 1829868760.

The previous prime is 2012855629. The next prime is 2012855651. The reversal of 2012855647 is 7465582102.

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 2012855647 - 2²³ = 2004467039 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 (2012855627) 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, 91493428 + ... + 91493449.

It is an arithmetic number, because the mean of its divisors is an integer number (548960634).

Almost surely, 2^2012855647 is an apocalyptic number.

2012855647 is a deficient number, since it is larger than the sum of its proper divisors (182986889).

2012855647 is a wasteful number, since it uses less digits than its factorization.

2012855647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182986888.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2012855647 is about 44864.8598236972. The cubic root of 2012855647 is about 1262.6148031668.

The spelling of 2012855647 in words is "two billion, twelve million, eight hundred fifty-five thousand, six hundred forty-seven".