161382375526 has 8 divisors (see below), whose sum is σ = 242319826224. Its totient is φ = 80609100120.

The previous prime is 161382375523. The next prime is 161382375547. The reversal of 161382375526 is 625573283161.

It is a happy number.

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

It is a super-2 number, since 2×161382375526² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161382375526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161382375523) 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, 41041365 + ... + 41045296.

It is an arithmetic number, because the mean of its divisors is an integer number (30289978278).

Almost surely, 2^161382375526 is an apocalyptic number.

161382375526 is a deficient number, since it is larger than the sum of its proper divisors (80937450698).

161382375526 is an equidigital number, since it uses as much as digits as its factorization.

161382375526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82087646.

The product of its digits is 1814400, while the sum is 49.

The spelling of 161382375526 in words is "one hundred sixty-one billion, three hundred eighty-two million, three hundred seventy-five thousand, five hundred twenty-six".