20813843011452 has 96 divisors (see below), whose sum is σ = 54082757320704. Its totient is φ = 6199963161600.

The previous prime is 20813843011411. The next prime is 20813843011487. The reversal of 20813843011452 is 25411034831802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30714324 + ... + 31384667.

It is an arithmetic number, because the mean of its divisors is an integer number (563362055424).

Almost surely, 2^{20813843011452} is an apocalyptic number.

It is an amenable number.

20813843011452 is an abundant number, since it is smaller than the sum of its proper divisors (33268914309252).

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

20813843011452 is a wasteful number, since it uses less digits than its factorization.

20813843011452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62099099 (or 62099097 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

It can be divided in two parts, 2081384 and 3011452, that added together give a triangular number (5092836 = T₃₁₉₁).

The spelling of 20813843011452 in words is "twenty trillion, eight hundred thirteen billion, eight hundred forty-three million, eleven thousand, four hundred fifty-two".