1956239634047 has 4 divisors (see below), whose sum is σ = 1957805880000. Its totient is φ = 1954673388096.

The previous prime is 1956239634043. The next prime is 1956239634049. The reversal of 1956239634047 is 7404369326591.

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 1956239634047 - 2² = 1956239634043 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 (1956239634043) 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, 783121103 + ... + 783123600.

It is an arithmetic number, because the mean of its divisors is an integer number (489451470000).

Almost surely, 2^{1956239634047} is an apocalyptic number.

1956239634047 is a deficient number, since it is larger than the sum of its proper divisors (1566245953).

1956239634047 is a wasteful number, since it uses less digits than its factorization.

1956239634047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566245952.

The product of its (nonzero) digits is 29393280, while the sum is 59.

The spelling of 1956239634047 in words is "one trillion, nine hundred fifty-six billion, two hundred thirty-nine million, six hundred thirty-four thousand, forty-seven".