181365391301140 has 48 divisors (see below), whose sum is σ = 384434602977600. Its totient is φ = 71866701800192.

The previous prime is 181365391301113. The next prime is 181365391301147. The reversal of 181365391301140 is 41103193563181.

181365391301140 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181365391301147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108242271 + ... + 109905049.

It is an arithmetic number, because the mean of its divisors is an integer number (8009054228700).

Almost surely, 2^{181365391301140} is an apocalyptic number.

181365391301140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181365391301140 is an abundant number, since it is smaller than the sum of its proper divisors (203069211676460).

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

181365391301140 is a wasteful number, since it uses less digits than its factorization.

181365391301140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713864 (or 1713862 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 181365391301140 in words is "one hundred eighty-one trillion, three hundred sixty-five billion, three hundred ninety-one million, three hundred one thousand, one hundred forty".