140521223412135 has 16 divisors (see below), whose sum is σ = 249815508288480. Its totient is φ = 74944652486400.

The previous prime is 140521223412133. The next prime is 140521223412149. The reversal of 140521223412135 is 531214322125041.

140521223412135 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 2 + 1 + 223 + 412 + 13 + 5 = 666.

It is not a de Polignac number, because 140521223412135 - 2¹ = 140521223412133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140521223412135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140521223412133) 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, 520448975466 + ... + 520448975735.

It is an arithmetic number, because the mean of its divisors is an integer number (15613469268030).

Almost surely, 2^{140521223412135} is an apocalyptic number.

140521223412135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140521223412135 is a deficient number, since it is larger than the sum of its proper divisors (109294284876345).

140521223412135 is a wasteful number, since it uses less digits than its factorization.

140521223412135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040897951215 (or 1040897951209 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 140521223412135 its reverse (531214322125041), we get a palindrome (671735545537176).

The spelling of 140521223412135 in words is "one hundred forty trillion, five hundred twenty-one billion, two hundred twenty-three million, four hundred twelve thousand, one hundred thirty-five".