42351365623 has 6 divisors (see below), whose sum is σ = 48402182984. Its totient is φ = 36300703836.

The previous prime is 42351365603. The next prime is 42351365647. The reversal of 42351365623 is 32656315324.

It is not a de Polignac number, because 42351365623 - 2¹³ = 42351357431 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 (42351365603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 505590 + ... + 583372.

Almost surely, 2^42351365623 is an apocalyptic number.

42351365623 is a deficient number, since it is larger than the sum of its proper divisors (6050817361).

42351365623 is an frugal number, since it uses more digits than its factorization.

42351365623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155573 (or 77790 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The spelling of 42351365623 in words is "forty-two billion, three hundred fifty-one million, three hundred sixty-five thousand, six hundred twenty-three".