102287618440 has 64 divisors (see below), whose sum is σ = 263053992960. Its totient is φ = 35066215680.

The previous prime is 102287618431. The next prime is 102287618441. The reversal of 102287618440 is 44816782201.

It is a super-2 number, since 2×102287618440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102287618441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3992070 + ... + 4017610.

It is an arithmetic number, because the mean of its divisors is an integer number (4110218640).

Almost surely, 2^102287618440 is an apocalyptic number.

102287618440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102287618440 is an abundant number, since it is smaller than the sum of its proper divisors (160766374520).

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

102287618440 is a wasteful number, since it uses less digits than its factorization.

102287618440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39862 (or 39858 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 102287618440 in words is "one hundred two billion, two hundred eighty-seven million, six hundred eighteen thousand, four hundred forty".