20111032677492 has 144 divisors (see below), whose sum is σ = 52881879960000. Its totient is φ = 6438709315584.

The previous prime is 20111032677479. The next prime is 20111032677497. The reversal of 20111032677492 is 29477623011102.

20111032677492 is a `hidden beast` number, since 20 + 1 + 110 + 3 + 26 + 7 + 7 + 492 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111032677497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138011623 + ... + 138157265.

It is an arithmetic number, because the mean of its divisors is an integer number (367235277500).

Almost surely, 2^{20111032677492} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111032677492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26440939980000).

20111032677492 is an abundant number, since it is smaller than the sum of its proper divisors (32770847282508).

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

20111032677492 is a wasteful number, since it uses less digits than its factorization.

20111032677492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147022 (or 147017 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

Adding to 20111032677492 its reverse (29477623011102), we get a palindrome (49588655688594).

The spelling of 20111032677492 in words is "twenty trillion, one hundred eleven billion, thirty-two million, six hundred seventy-seven thousand, four hundred ninety-two".