155112246160440 has 256 divisors, whose sum is σ = 474343325614080. Its totient is φ = 40572196823040.

The previous prime is 155112246160411. The next prime is 155112246160453. The reversal of 155112246160440 is 44061642211551.

It is a junction number, because it is equal to n+sod(n) for n = 155112246160392 and 155112246160401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 549916084 + ... + 550198076.

It is an arithmetic number, because the mean of its divisors is an integer number (1852903615680).

Almost surely, 2^{155112246160440} is an apocalyptic number.

155112246160440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155112246160440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237171662807040).

155112246160440 is an abundant number, since it is smaller than the sum of its proper divisors (319231079453640).

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

155112246160440 is a wasteful number, since it uses less digits than its factorization.

155112246160440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282534 (or 282530 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

Adding to 155112246160440 its reverse (44061642211551), we get a palindrome (199173888371991).

The spelling of 155112246160440 in words is "one hundred fifty-five trillion, one hundred twelve billion, two hundred forty-six million, one hundred sixty thousand, four hundred forty".