23781891268754 has 4 divisors (see below), whose sum is σ = 35672836903134. Its totient is φ = 11890945634376.

The previous prime is 23781891268661. The next prime is 23781891268813. The reversal of 23781891268754 is 45786219818732.

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

It can be written as a sum of positive squares in only one way, i.e., 23695233450625 + 86657818129 = 4867775^2 + 294377^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5945472817187 + ... + 5945472817190.

Almost surely, 2^{23781891268754} is an apocalyptic number.

23781891268754 is a deficient number, since it is larger than the sum of its proper divisors (11890945634380).

23781891268754 is a wasteful number, since it uses less digits than its factorization.

23781891268754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11890945634379.

The product of its digits is 325140480, while the sum is 71.

The spelling of 23781891268754 in words is "twenty-three trillion, seven hundred eighty-one billion, eight hundred ninety-one million, two hundred sixty-eight thousand, seven hundred fifty-four".