1155363275640 has 192 divisors, whose sum is σ = 4035614637600. Its totient is φ = 263845112832.

The previous prime is 1155363275621. The next prime is 1155363275663. The reversal of 1155363275640 is 465723635511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155363275640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6480006 + ... + 6655914.

Almost surely, 2^{1155363275640} is an apocalyptic number.

1155363275640 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 1155363275640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2017807318800).

1155363275640 is an abundant number, since it is smaller than the sum of its proper divisors (2880251361960).

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

1155363275640 is a wasteful number, since it uses less digits than its factorization.

1155363275640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177054 (or 177043 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 1155363275640 in words is "one trillion, one hundred fifty-five billion, three hundred sixty-three million, two hundred seventy-five thousand, six hundred forty".