20111432500424 has 32 divisors (see below), whose sum is σ = 38588687280000. Its totient is φ = 9821149824192.

The previous prime is 20111432500409. The next prime is 20111432500459. The reversal of 20111432500424 is 42400523411102.

It is a happy number.

It is a super-2 number, since 2×20111432500424² (a number of 27 digits) contains 22 as substring.

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, 2643377 + ... + 6870975.

It is an arithmetic number, because the mean of its divisors is an integer number (1205896477500).

Almost surely, 2^{20111432500424} is an apocalyptic number.

It is an amenable number.

20111432500424 is a deficient number, since it is larger than the sum of its proper divisors (18477254779576).

20111432500424 is a wasteful number, since it uses less digits than its factorization.

20111432500424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241477 (or 4241473 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20111432500424 its reverse (42400523411102), we get a palindrome (62511955911526).

The spelling of 20111432500424 in words is "twenty trillion, one hundred eleven billion, four hundred thirty-two million, five hundred thousand, four hundred twenty-four".