1147257211860 has 144 divisors (see below), whose sum is σ = 3494396505600. Its totient is φ = 304673144832.

The previous prime is 1147257211829. The next prime is 1147257211873. The reversal of 1147257211860 is 681127527411.

1147257211860 is a `hidden beast` number, since 1 + 1 + 4 + 7 + 2 + 572 + 1 + 18 + 60 = 666.

It is a super-2 number, since 2×1147257211860² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49681237 + ... + 49704323.

It is an arithmetic number, because the mean of its divisors is an integer number (24266642400).

Almost surely, 2^{1147257211860} is an apocalyptic number.

1147257211860 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 1147257211860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747198252800).

1147257211860 is an abundant number, since it is smaller than the sum of its proper divisors (2347139293740).

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

1147257211860 is a wasteful number, since it uses less digits than its factorization.

1147257211860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24230 (or 24225 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 1147257211860 in words is "one trillion, one hundred forty-seven billion, two hundred fifty-seven million, two hundred eleven thousand, eight hundred sixty".