136554060521 has 16 divisors (see below), whose sum is σ = 140936699904. Its totient is φ = 132238661184.

The previous prime is 136554060497. The next prime is 136554060553. The reversal of 136554060521 is 125060455631.

It is a cyclic number.

It is not a de Polignac number, because 136554060521 - 2¹⁸ = 136553798377 is a prime.

It is a super-2 number, since 2×136554060521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136554060581) 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, 2195771 + ... + 2257103.

It is an arithmetic number, because the mean of its divisors is an integer number (8808543744).

Almost surely, 2^136554060521 is an apocalyptic number.

It is an amenable number.

136554060521 is a deficient number, since it is larger than the sum of its proper divisors (4382639383).

136554060521 is a wasteful number, since it uses less digits than its factorization.

136554060521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61880.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 136554060521 in words is "one hundred thirty-six billion, five hundred fifty-four million, sixty thousand, five hundred twenty-one".