136501981245 has 80 divisors (see below), whose sum is σ = 280442764800. Its totient is φ = 62223676416.

The previous prime is 136501981237. The next prime is 136501981331. The reversal of 136501981245 is 542189105631.

It is a happy number.

136501981245 is a `hidden beast` number, since 1 + 3 + 6 + 501 + 98 + 12 + 45 = 666.

It is not a de Polignac number, because 136501981245 - 2³ = 136501981237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 136501981245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 932556 + ... + 1068954.

It is an arithmetic number, because the mean of its divisors is an integer number (3505534560).

Almost surely, 2^136501981245 is an apocalyptic number.

136501981245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136501981245 is an abundant number, since it is smaller than the sum of its proper divisors (143940783555).

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

136501981245 is a wasteful number, since it uses less digits than its factorization.

136501981245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136776 (or 136767 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 136501981245 in words is "one hundred thirty-six billion, five hundred one million, nine hundred eighty-one thousand, two hundred forty-five".