2011854687647 has 16 divisors (see below), whose sum is σ = 2434789627200. Its totient is φ = 1622824562688.

The previous prime is 2011854687581. The next prime is 2011854687671. The reversal of 2011854687647 is 7467864581102.

It is not a de Polignac number, because 2011854687647 - 2⁸ = 2011854687391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011854687697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97763 + ... + 2008299.

It is an arithmetic number, because the mean of its divisors is an integer number (152174351700).

Almost surely, 2^{2011854687647} is an apocalyptic number.

2011854687647 is a deficient number, since it is larger than the sum of its proper divisors (422934939553).

2011854687647 is a wasteful number, since it uses less digits than its factorization.

2011854687647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919410.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 2011854687647 in words is "two trillion, eleven billion, eight hundred fifty-four million, six hundred eighty-seven thousand, six hundred forty-seven".