2147191115490 has 192 divisors, whose sum is σ = 6095990759040. Its totient is φ = 542286420480.

The previous prime is 2147191115479. The next prime is 2147191115513. The reversal of 2147191115490 is 945111917412.

2147191115490 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 1 + 91 + 11 + 549 + 0 = 666.

It is a super-2 number, since 2×2147191115490² (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 Curzon 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 95 ways as a sum of consecutive naturals, for example, 261179580 + ... + 261187800.

It is an arithmetic number, because the mean of its divisors is an integer number (31749951870).

Almost surely, 2^{2147191115490} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2147191115490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3047995379520).

2147191115490 is an abundant number, since it is smaller than the sum of its proper divisors (3948799643550).

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

2147191115490 is a wasteful number, since it uses less digits than its factorization.

2147191115490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919 (or 13907 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 2147191115490 in words is "two trillion, one hundred forty-seven billion, one hundred ninety-one million, one hundred fifteen thousand, four hundred ninety".