20015755436 has 12 divisors (see below), whose sum is σ = 35028879312. Its totient is φ = 10007504208.

The previous prime is 20015755429. The next prime is 20015755483. The reversal of 20015755436 is 63455751002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20015755436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52526 + ... + 206858.

It is an arithmetic number, because the mean of its divisors is an integer number (2919073276).

Almost surely, 2^20015755436 is an apocalyptic number.

It is an amenable number.

20015755436 is a deficient number, since it is larger than the sum of its proper divisors (15013123876).

20015755436 is a wasteful number, since it uses less digits than its factorization.

20015755436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186760 (or 186758 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 20015755436 in words is "twenty billion, fifteen million, seven hundred fifty-five thousand, four hundred thirty-six".