1151121542540 has 24 divisors (see below), whose sum is σ = 2417418797472. Its totient is φ = 460436510720.

The previous prime is 1151121542531. The next prime is 1151121542567. The reversal of 1151121542540 is 452451211511.

It is a junction number, because it is equal to n+sod(n) for n = 1151121542497 and 1151121542506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43697 + ... + 1517943.

It is an arithmetic number, because the mean of its divisors is an integer number (100725783228).

Almost surely, 2^{1151121542540} is an apocalyptic number.

1151121542540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151121542540 is an abundant number, since it is smaller than the sum of its proper divisors (1266297254932).

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

1151121542540 is a wasteful number, since it uses less digits than its factorization.

1151121542540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513297 (or 1513295 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 32.

The spelling of 1151121542540 in words is "one trillion, one hundred fifty-one billion, one hundred twenty-one million, five hundred forty-two thousand, five hundred forty".