20655140534436 has 192 divisors, whose sum is σ = 50737765478400. Its totient is φ = 6534315110400.

The previous prime is 20655140534423. The next prime is 20655140534443. The reversal of 20655140534436 is 63443504155602.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1014037660 + ... + 1014058028.

It is an arithmetic number, because the mean of its divisors is an integer number (264259195200).

Almost surely, 2^{20655140534436} is an apocalyptic number.

It is an amenable number.

20655140534436 is an abundant number, since it is smaller than the sum of its proper divisors (30082624943964).

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

20655140534436 is a wasteful number, since it uses less digits than its factorization.

20655140534436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20890 (or 20888 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 20655140534436 in words is "twenty trillion, six hundred fifty-five billion, one hundred forty million, five hundred thirty-four thousand, four hundred thirty-six".