1157216878452 has 48 divisors (see below), whose sum is σ = 2819708559360. Its totient is φ = 368687851488.

The previous prime is 1157216878421. The next prime is 1157216878453. The reversal of 1157216878452 is 2548786127511.

It is a junction number, because it is equal to n+sod(n) for n = 1157216878392 and 1157216878401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157216878453) 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, 1225348 + ... + 1953435.

It is an arithmetic number, because the mean of its divisors is an integer number (58743928320).

Almost surely, 2^{1157216878452} is an apocalyptic number.

1157216878452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1157216878452 is an abundant number, since it is smaller than the sum of its proper divisors (1662491680908).

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

1157216878452 is a wasteful number, since it uses less digits than its factorization.

1157216878452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180132 (or 3180130 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 57.

The spelling of 1157216878452 in words is "one trillion, one hundred fifty-seven billion, two hundred sixteen million, eight hundred seventy-eight thousand, four hundred fifty-two".