20136474512654 has 16 divisors (see below), whose sum is σ = 30419704980000. Its totient is φ = 9996627417504.

The previous prime is 20136474512647. The next prime is 20136474512669. The reversal of 20136474512654 is 45621547463102.

It is a super-2 number, since 2×20136474512654² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12901754 + ... + 14378045.

It is an arithmetic number, because the mean of its divisors is an integer number (1901231561250).

Almost surely, 2^{20136474512654} is an apocalyptic number.

20136474512654 is a deficient number, since it is larger than the sum of its proper divisors (10283230467346).

20136474512654 is a wasteful number, since it uses less digits than its factorization.

20136474512654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27282427.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 20136474512654 in words is "twenty trillion, one hundred thirty-six billion, four hundred seventy-four million, five hundred twelve thousand, six hundred fifty-four".