7881237312 has 56 divisors (see below), whose sum is σ = 22456481376. Its totient is φ = 2424995328.

The previous prime is 7881237307. The next prime is 7881237317. The reversal of 7881237312 is 2137321887.

It is an interprime number because it is at equal distance from previous prime (7881237307) and next prime (7881237317).

It is a super-2 number, since 2×7881237312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881237317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576278 + ... + 1581269.

It is an arithmetic number, because the mean of its divisors is an integer number (401008596).

Almost surely, 2^7881237312 is an apocalyptic number.

It is an amenable number.

7881237312 is an abundant number, since it is smaller than the sum of its proper divisors (14575244064).

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

7881237312 is a wasteful number, since it uses less digits than its factorization.

7881237312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157575 (or 3157565 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 7881237312 is about 88776.3330623652. Note that the first 3 decimals coincide. The cubic root of 7881237312 is about 1990.0537271590.

The spelling of 7881237312 in words is "seven billion, eight hundred eighty-one million, two hundred thirty-seven thousand, three hundred twelve".