20371054205 has 8 divisors (see below), whose sum is σ = 25288205400. Its totient is φ = 15734883136.

The previous prime is 20371054183. The next prime is 20371054213. The reversal of 20371054205 is 50245017302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5875375801 + 14495678404 = 76651^2 + 120398^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20371054205 - 2⁶ = 20371054141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70244870 + ... + 70245159.

It is an arithmetic number, because the mean of its divisors is an integer number (3161025675).

Almost surely, 2^20371054205 is an apocalyptic number.

It is an amenable number.

20371054205 is a deficient number, since it is larger than the sum of its proper divisors (4917151195).

20371054205 is a wasteful number, since it uses less digits than its factorization.

20371054205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140490063.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 20371054205 in words is "twenty billion, three hundred seventy-one million, fifty-four thousand, two hundred five".