20401753345737 has 4 divisors (see below), whose sum is σ = 27202337794320. Its totient is φ = 13601168897156.

The previous prime is 20401753345723. The next prime is 20401753345759. The reversal of 20401753345737 is 73754335710402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20401753345737 - 2¹⁶ = 20401753280201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20401753345737.

It is not an unprimeable number, because it can be changed into a prime (20401753345837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400292224287 + ... + 3400292224292.

It is an arithmetic number, because the mean of its divisors is an integer number (6800584448580).

Almost surely, 2^{20401753345737} is an apocalyptic number.

It is an amenable number.

20401753345737 is a deficient number, since it is larger than the sum of its proper divisors (6800584448583).

20401753345737 is an equidigital number, since it uses as much as digits as its factorization.

20401753345737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800584448582.

The product of its (nonzero) digits is 7408800, while the sum is 51.

The spelling of 20401753345737 in words is "twenty trillion, four hundred one billion, seven hundred fifty-three million, three hundred forty-five thousand, seven hundred thirty-seven".