623459382464 has 56 divisors (see below), whose sum is σ = 1242508561968. Its totient is φ = 310388981760.

The previous prime is 623459382463. The next prime is 623459382467. The reversal of 623459382464 is 464283954326.

It is a super-2 number, since 2×623459382464² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (623459382463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15591104 + ... + 15631040.

Almost surely, 2^623459382464 is an apocalyptic number.

623459382464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

623459382464 is a deficient number, since it is larger than the sum of its proper divisors (619049179504).

623459382464 is a wasteful number, since it uses less digits than its factorization.

623459382464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40993 (or 40983 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 56.

The spelling of 623459382464 in words is "six hundred twenty-three billion, four hundred fifty-nine million, three hundred eighty-two thousand, four hundred sixty-four".