3261510340140 has 192 divisors, whose sum is σ = 10435828233600. Its totient is φ = 753967349760.

The previous prime is 3261510340117. The next prime is 3261510340159. The reversal of 3261510340140 is 410430151623.

3261510340140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3261510340098 and 3261510340107.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5846086 + ... + 6379634.

It is an arithmetic number, because the mean of its divisors is an integer number (54353272050).

Almost surely, 2^{3261510340140} is an apocalyptic number.

3261510340140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261510340140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5217914116800).

3261510340140 is an abundant number, since it is smaller than the sum of its proper divisors (7174317893460).

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

3261510340140 is a wasteful number, since it uses less digits than its factorization.

3261510340140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534052 (or 534050 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 3261510340140 its reverse (410430151623), we get a palindrome (3671940491763).

The spelling of 3261510340140 in words is "three trillion, two hundred sixty-one billion, five hundred ten million, three hundred forty thousand, one hundred forty".