20107961853 has 16 divisors (see below), whose sum is σ = 31972909056. Its totient is φ = 10990686960.

The previous prime is 20107961851. The next prime is 20107961891. The reversal of 20107961853 is 35816970102.

It is not a de Polignac number, because 20107961853 - 2¹ = 20107961851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107961851) 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, 20815213 + ... + 20816178.

It is an arithmetic number, because the mean of its divisors is an integer number (1998306816).

Almost surely, 2^20107961853 is an apocalyptic number.

20107961853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20107961853 is a deficient number, since it is larger than the sum of its proper divisors (11864947203).

20107961853 is a wasteful number, since it uses less digits than its factorization.

20107961853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41631424.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 20107961853 in words is "twenty billion, one hundred seven million, nine hundred sixty-one thousand, eight hundred fifty-three".