623081585615456 has 48 divisors (see below), whose sum is σ = 1344210253360128. Its totient is φ = 281948862595200.

The previous prime is 623081585615369. The next prime is 623081585615513. The reversal of 623081585615456 is 654516585180326.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 623081585615392 and 623081585615401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3968796260 + ... + 3968953251.

It is an arithmetic number, because the mean of its divisors is an integer number (28004380278336).

Almost surely, 2^{623081585615456} is an apocalyptic number.

It is an amenable number.

623081585615456 is an abundant number, since it is smaller than the sum of its proper divisors (721128667744672).

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

623081585615456 is a wasteful number, since it uses less digits than its factorization.

623081585615456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937749755 (or 7937749747 counting only the distinct ones).

The product of its (nonzero) digits is 207360000, while the sum is 65.

The spelling of 623081585615456 in words is "six hundred twenty-three trillion, eighty-one billion, five hundred eighty-five million, six hundred fifteen thousand, four hundred fifty-six".