102023320440 has 64 divisors (see below), whose sum is σ = 306128172960. Its totient is φ = 27201044480.

The previous prime is 102023320433. The next prime is 102023320471. The reversal of 102023320440 is 44023320201.

It is a congruent number.

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, 574792 + ... + 731048.

Almost surely, 2^102023320440 is an apocalyptic number.

102023320440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102023320440 is an abundant number, since it is smaller than the sum of its proper divisors (204104852520).

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

102023320440 is a wasteful number, since it uses less digits than its factorization.

102023320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161712 (or 161708 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 102023320440 its reverse (44023320201), we get a palindrome (146046640641).

The spelling of 102023320440 in words is "one hundred two billion, twenty-three million, three hundred twenty thousand, four hundred forty".