173378782055131 has 4 divisors (see below), whose sum is σ = 173419779643200. Its totient is φ = 173337784467064.

The previous prime is 173378782055099. The next prime is 173378782055177. The reversal of 173378782055131 is 131550287873371.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 173378782055131 - 2⁵ = 173378782055099 is a prime.

It is a super-2 number, since 2×173378782055131² (a number of 29 digits) contains 22 as substring.

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 173378782055131.

It is not an unprimeable number, because it can be changed into a prime (173378782005131) 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, 20498787691 + ... + 20498796148.

It is an arithmetic number, because the mean of its divisors is an integer number (43354944910800).

Almost surely, 2^{173378782055131} is an apocalyptic number.

173378782055131 is a deficient number, since it is larger than the sum of its proper divisors (40997588069).

173378782055131 is an equidigital number, since it uses as much as digits as its factorization.

173378782055131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40997588068.

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 173378782055131 in words is "one hundred seventy-three trillion, three hundred seventy-eight billion, seven hundred eighty-two million, fifty-five thousand, one hundred thirty-one".