20257363061 has 8 divisors (see below), whose sum is σ = 21818639640. Its totient is φ = 18696517632.

The previous prime is 20257362991. The next prime is 20257363079. The reversal of 20257363061 is 16036375202.

It can be written as a sum of positive squares in 4 ways, for example, as 626550961 + 19630812100 = 25031^2 + 140110^2 .

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

It is not a de Polignac number, because 20257363061 - 2¹⁸ = 20257100917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257363661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680 + ... + 201393.

It is an arithmetic number, because the mean of its divisors is an integer number (2727329955).

Almost surely, 2^20257363061 is an apocalyptic number.

It is an amenable number.

20257363061 is a deficient number, since it is larger than the sum of its proper divisors (1561276579).

20257363061 is a wasteful number, since it uses less digits than its factorization.

20257363061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215575.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 20257363061 in words is "twenty billion, two hundred fifty-seven million, three hundred sixty-three thousand, sixty-one".