1151481856000 has 480 divisors, whose sum is σ = 3391846907904. Its totient is φ = 381911040000.

The previous prime is 1151481855943. The next prime is 1151481856003. The reversal of 1151481856000 is 6581841511.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151481856003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444414705 + ... + 444417295.

Almost surely, 2^{1151481856000} is an apocalyptic number.

1151481856000 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 1151481856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695923453952).

1151481856000 is an abundant number, since it is smaller than the sum of its proper divisors (2240365051904).

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

1151481856000 is an frugal number, since it uses more digits than its factorization.

1151481856000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 40.

The spelling of 1151481856000 in words is "one trillion, one hundred fifty-one billion, four hundred eighty-one million, eight hundred fifty-six thousand".