20101393837 has 4 divisors (see below), whose sum is σ = 22973021536. Its totient is φ = 17229766140.

The previous prime is 20101393769. The next prime is 20101393841. The reversal of 20101393837 is 73839310102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73839310102 = 2 ⋅36919655051.

It is a cyclic number.

It is not a de Polignac number, because 20101393837 - 2¹⁵ = 20101361069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101393796 and 20101393805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101394837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435813839 + ... + 1435813852.

It is an arithmetic number, because the mean of its divisors is an integer number (5743255384).

Almost surely, 2^20101393837 is an apocalyptic number.

It is an amenable number.

20101393837 is a deficient number, since it is larger than the sum of its proper divisors (2871627699).

20101393837 is an equidigital number, since it uses as much as digits as its factorization.

20101393837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871627698.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 20101393837 in words is "twenty billion, one hundred one million, three hundred ninety-three thousand, eight hundred thirty-seven".