623620775442 has 32 divisors (see below), whose sum is σ = 1509267088512. Its totient is φ = 167696342784.

The previous prime is 623620775399. The next prime is 623620775507. The reversal of 623620775442 is 244577026326.

It is a junction number, because it is equal to n+sod(n) for n = 623620775391 and 623620775400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436708513 + ... + 436709940.

It is an arithmetic number, because the mean of its divisors is an integer number (47164596516).

Almost surely, 2^623620775442 is an apocalyptic number.

623620775442 is an abundant number, since it is smaller than the sum of its proper divisors (885646313070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623620775442 is a wasteful number, since it uses less digits than its factorization.

623620775442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873418482.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 623620775442 in words is "six hundred twenty-three billion, six hundred twenty million, seven hundred seventy-five thousand, four hundred forty-two".