68562433749 has 4 divisors (see below), whose sum is σ = 91416578336. Its totient is φ = 45708289164.

The previous prime is 68562433747. The next prime is 68562433783. The reversal of 68562433749 is 94733426586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68562433749 - 2¹ = 68562433747 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 (68562433747) 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, 11427072289 + ... + 11427072294.

It is an arithmetic number, because the mean of its divisors is an integer number (22854144584).

Almost surely, 2^68562433749 is an apocalyptic number.

It is an amenable number.

68562433749 is a deficient number, since it is larger than the sum of its proper divisors (22854144587).

68562433749 is a wasteful number, since it uses less digits than its factorization.

68562433749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22854144586.

The product of its digits is 26127360, while the sum is 57.

The spelling of 68562433749 in words is "sixty-eight billion, five hundred sixty-two million, four hundred thirty-three thousand, seven hundred forty-nine".