20006502247136 has 24 divisors (see below), whose sum is σ = 39451432681080. Its totient is φ = 9987090772608.

The previous prime is 20006502247129. The next prime is 20006502247229. The reversal of 20006502247136 is 63174220560002.

It is a self number, because there is not a number n which added to its sum of digits gives 20006502247136.

It is a congruent number.

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, 504990851 + ... + 505030466.

It is an arithmetic number, because the mean of its divisors is an integer number (1643809695045).

Almost surely, 2^{20006502247136} is an apocalyptic number.

It is an amenable number.

20006502247136 is a deficient number, since it is larger than the sum of its proper divisors (19444930433944).

20006502247136 is a wasteful number, since it uses less digits than its factorization.

20006502247136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010021946 (or 1010021938 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20006502247136 in words is "twenty trillion, six billion, five hundred two million, two hundred forty-seven thousand, one hundred thirty-six".