20357206737 has 8 divisors (see below), whose sum is σ = 31020505536. Its totient is φ = 11632689552.

The previous prime is 20357206729. The next prime is 20357206741. The reversal of 20357206737 is 73760275302.

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

It is not a de Polignac number, because 20357206737 - 2³ = 20357206729 is a prime.

It is a super-2 number, since 2×20357206737² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20357286737) 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, 484695378 + ... + 484695419.

It is an arithmetic number, because the mean of its divisors is an integer number (3877563192).

Almost surely, 2^20357206737 is an apocalyptic number.

It is an amenable number.

20357206737 is a deficient number, since it is larger than the sum of its proper divisors (10663298799).

20357206737 is an equidigital number, since it uses as much as digits as its factorization.

20357206737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969390807.

The product of its (nonzero) digits is 370440, while the sum is 42.

The spelling of 20357206737 in words is "twenty billion, three hundred fifty-seven million, two hundred six thousand, seven hundred thirty-seven".