623453648898 has 24 divisors (see below), whose sum is σ = 1315988039088. Its totient is φ = 196880098968.

The previous prime is 623453648897. The next prime is 623453648911. The reversal of 623453648898 is 898846354326.

It is a super-2 number, since 2×623453648898² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (623453648897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143916036 + ... + 143920367.

It is an arithmetic number, because the mean of its divisors is an integer number (54832834962).

Almost surely, 2^623453648898 is an apocalyptic number.

623453648898 is an abundant number, since it is smaller than the sum of its proper divisors (692534390190).

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

623453648898 is a wasteful number, since it uses less digits than its factorization.

623453648898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287836446 (or 287836427 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 66.

The spelling of 623453648898 in words is "six hundred twenty-three billion, four hundred fifty-three million, six hundred forty-eight thousand, eight hundred ninety-eight".