20611757434000 has 40 divisors (see below), whose sum is σ = 49839229480248. Its totient is φ = 8244702972800.

The previous prime is 20611757433997. The next prime is 20611757434097. The reversal of 20611757434000 is 43475711602.

It can be written as a sum of positive squares in 4 ways, for example, as 176547870976 + 20435209563024 = 420176^2 + 4520532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 5152937359 + ... + 5152941358.

Almost surely, 2^{20611757434000} is an apocalyptic number.

20611757434000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20611757434000 is an abundant number, since it is smaller than the sum of its proper divisors (29227472046248).

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

20611757434000 is a wasteful number, since it uses less digits than its factorization.

20611757434000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305878740 (or 10305878724 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 20611757434000 in words is "twenty trillion, six hundred eleven billion, seven hundred fifty-seven million, four hundred thirty-four thousand".