20136543154734 has 32 divisors (see below), whose sum is σ = 40832818101504. Its totient is φ = 6619433224320.

The previous prime is 20136543154661. The next prime is 20136543154759. The reversal of 20136543154734 is 43745134563102.

It is a super-2 number, since 2×20136543154734² (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 15 ways as a sum of consecutive naturals, for example, 67451484 + ... + 67749359.

It is an arithmetic number, because the mean of its divisors is an integer number (1276025565672).

Almost surely, 2^{20136543154734} is an apocalyptic number.

20136543154734 is an abundant number, since it is smaller than the sum of its proper divisors (20696274946770).

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

20136543154734 is a wasteful number, since it uses less digits than its factorization.

20136543154734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135201192.

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 20136543154734 in words is "twenty trillion, one hundred thirty-six billion, five hundred forty-three million, one hundred fifty-four thousand, seven hundred thirty-four".