20101603343849 has 16 divisors (see below), whose sum is σ = 20612876578560. Its totient is φ = 19593826224000.

The previous prime is 20101603343837. The next prime is 20101603343977. The reversal of 20101603343849 is 94834330610102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101603343849 is a prime.

It is a super-3 number, since 3×20101603343849³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101603345849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148444757 + ... + 148580109.

It is an arithmetic number, because the mean of its divisors is an integer number (1288304786160).

Almost surely, 2^{20101603343849} is an apocalyptic number.

It is an amenable number.

20101603343849 is a deficient number, since it is larger than the sum of its proper divisors (511273234711).

20101603343849 is a wasteful number, since it uses less digits than its factorization.

20101603343849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148240.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20101603343849 in words is "twenty trillion, one hundred one billion, six hundred three million, three hundred forty-three thousand, eight hundred forty-nine".