20401747337 has 12 divisors (see below), whose sum is σ = 20809394844. Its totient is φ = 20001945600.

The previous prime is 20401747309. The next prime is 20401747403. The reversal of 20401747337 is 73374710402.

It can be written as a sum of positive squares in 6 ways, for example, as 1626992896 + 18774754441 = 40336^2 + 137021^2 .

It is not a de Polignac number, because 20401747337 - 2⁸ = 20401747081 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401747337.

It is not an unprimeable number, because it can be changed into a prime (20401747307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7282337 + ... + 7285137.

It is an arithmetic number, because the mean of its divisors is an integer number (1734116237).

Almost surely, 2^20401747337 is an apocalyptic number.

It is an amenable number.

20401747337 is a deficient number, since it is larger than the sum of its proper divisors (407647507).

20401747337 is an equidigital number, since it uses as much as digits as its factorization.

20401747337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5447 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 20401747337 in words is "twenty billion, four hundred one million, seven hundred forty-seven thousand, three hundred thirty-seven".