102605204020340 has 48 divisors (see below), whose sum is σ = 254743954819200. Its totient is φ = 33965860639872.

The previous prime is 102605204020331. The next prime is 102605204020391. The reversal of 102605204020340 is 43020402506201.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 12636104810 + ... + 12636112929.

It is an arithmetic number, because the mean of its divisors is an integer number (5307165725400).

Almost surely, 2^{102605204020340} is an apocalyptic number.

102605204020340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102605204020340 is an abundant number, since it is smaller than the sum of its proper divisors (152138750798860).

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

102605204020340 is a wasteful number, since it uses less digits than its factorization.

102605204020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25272217784 (or 25272217782 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 102605204020340 its reverse (43020402506201), we get a palindrome (145625606526541).

The spelling of 102605204020340 in words is "one hundred two trillion, six hundred five billion, two hundred four million, twenty thousand, three hundred forty".