220497138739 has 8 divisors (see below), whose sum is σ = 223942283712. Its totient is φ = 217070769000.

The previous prime is 220497138707. The next prime is 220497138751. The reversal of 220497138739 is 937831794022.

It is a happy number.

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 220497138739 - 2⁵ = 220497138707 is a prime.

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 220497138739.

It is not an unprimeable number, because it can be changed into a prime (220497138839) 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, 4670137 + ... + 4717114.

It is an arithmetic number, because the mean of its divisors is an integer number (27992785464).

Almost surely, 2^220497138739 is an apocalyptic number.

220497138739 is a deficient number, since it is larger than the sum of its proper divisors (3445144973).

220497138739 is an equidigital number, since it uses as much as digits as its factorization.

220497138739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387617.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 220497138739 in words is "two hundred twenty billion, four hundred ninety-seven million, one hundred thirty-eight thousand, seven hundred thirty-nine".