20114640436 has 24 divisors (see below), whose sum is σ = 38404285920. Its totient is φ = 9142159200.

The previous prime is 20114640433. The next prime is 20114640437. The reversal of 20114640436 is 63404641102.

It is a junction number, because it is equal to n+sod(n) for n = 20114640398 and 20114640407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20114640433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842755 + ... + 866293.

It is an arithmetic number, because the mean of its divisors is an integer number (1600178580).

Almost surely, 2^20114640436 is an apocalyptic number.

It is an amenable number.

20114640436 is a deficient number, since it is larger than the sum of its proper divisors (18289645484).

20114640436 is a wasteful number, since it uses less digits than its factorization.

20114640436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42975 (or 42973 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 20114640436 in words is "twenty billion, one hundred fourteen million, six hundred forty thousand, four hundred thirty-six".