20507370737 has 8 divisors (see below), whose sum is σ = 23438715072. Its totient is φ = 17576456400.

The previous prime is 20507370713. The next prime is 20507370749. The reversal of 20507370737 is 73707370502.

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 20507370737 - 2²² = 20503176433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20507370694 and 20507370703.

It is not an unprimeable number, because it can be changed into a prime (20507370437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2162 + ... + 202532.

It is an arithmetic number, because the mean of its divisors is an integer number (2929839384).

Almost surely, 2^20507370737 is an apocalyptic number.

It is an amenable number.

20507370737 is a deficient number, since it is larger than the sum of its proper divisors (2931344335).

20507370737 is a wasteful number, since it uses less digits than its factorization.

20507370737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214999.

The product of its (nonzero) digits is 216090, while the sum is 41.

The spelling of 20507370737 in words is "twenty billion, five hundred seven million, three hundred seventy thousand, seven hundred thirty-seven".