623942362501 has 4 divisors (see below), whose sum is σ = 623946043872. Its totient is φ = 623938681132.

The previous prime is 623942362499. The next prime is 623942362567. The reversal of 623942362501 is 105263249326.

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 a cyclic number.

It is not a de Polignac number, because 623942362501 - 2¹ = 623942362499 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 (623942362591) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1573531 + ... + 1929736.

It is an arithmetic number, because the mean of its divisors is an integer number (155986510968).

Almost surely, 2^623942362501 is an apocalyptic number.

It is an amenable number.

623942362501 is a deficient number, since it is larger than the sum of its proper divisors (3681371).

623942362501 is a wasteful number, since it uses less digits than its factorization.

623942362501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681370.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 623942362501 in words is "six hundred twenty-three billion, nine hundred forty-two million, three hundred sixty-two thousand, five hundred one".