623430391840 has 48 divisors (see below), whose sum is σ = 1474204717440. Its totient is φ = 249143514880.

The previous prime is 623430391799. The next prime is 623430391841. The reversal of 623430391840 is 48193034326.

It is not an unprimeable number, because it can be changed into a prime (623430391841) 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, 1611160 + ... + 1960279.

It is an arithmetic number, because the mean of its divisors is an integer number (30712598280).

Almost surely, 2^623430391840 is an apocalyptic number.

It is an amenable number.

623430391840 is an abundant number, since it is smaller than the sum of its proper divisors (850774325600).

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

623430391840 is a wasteful number, since it uses less digits than its factorization.

623430391840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572545 (or 3572537 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 623430391840 in words is "six hundred twenty-three billion, four hundred thirty million, three hundred ninety-one thousand, eight hundred forty".