181340171265048 has 128 divisors (see below), whose sum is σ = 484892297809920. Its totient is φ = 56313633945600.

The previous prime is 181340171265013. The next prime is 181340171265083. The reversal of 181340171265048 is 840562171043181.

181340171265048 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (181340171265013) and next prime (181340171265083).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164405961 + ... + 165505287.

It is an arithmetic number, because the mean of its divisors is an integer number (3788221076640).

Almost surely, 2^{181340171265048} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181340171265048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242446148904960).

181340171265048 is an abundant number, since it is smaller than the sum of its proper divisors (303552126544872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181340171265048 is a wasteful number, since it uses less digits than its factorization.

181340171265048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103457 (or 1103453 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 181340171265048 in words is "one hundred eighty-one trillion, three hundred forty billion, one hundred seventy-one million, two hundred sixty-five thousand, forty-eight".