153640897605 has 80 divisors (see below), whose sum is σ = 297933672960. Its totient is φ = 75298833792.

The previous prime is 153640897559. The next prime is 153640897607. The reversal of 153640897605 is 506798046351.

153640897605 is a `hidden beast` number, since 1 + 536 + 40 + 8 + 9 + 7 + 60 + 5 = 666.

It is not a de Polignac number, because 153640897605 - 2⁶ = 153640897541 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153640897607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1108666 + ... + 1239524.

It is an arithmetic number, because the mean of its divisors is an integer number (3724170912).

Almost surely, 2^153640897605 is an apocalyptic number.

153640897605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153640897605 is a deficient number, since it is larger than the sum of its proper divisors (144292775355).

153640897605 is a wasteful number, since it uses less digits than its factorization.

153640897605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131112 (or 131103 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 153640897605 in words is "one hundred fifty-three billion, six hundred forty million, eight hundred ninety-seven thousand, six hundred five".