1881111137232 has 80 divisors (see below), whose sum is σ = 5115999251520. Its totient is φ = 593954150400.

The previous prime is 1881111137231. The next prime is 1881111137233. The reversal of 1881111137232 is 2327311111881.

It is an interprime number because it is at equal distance from previous prime (1881111137231) and next prime (1881111137233).

It is a super-2 number, since 2×1881111137232² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881111137231) 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, 6740632 + ... + 7014152.

It is an arithmetic number, because the mean of its divisors is an integer number (63949990644).

Almost surely, 2^{1881111137232} is an apocalyptic number.

1881111137232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1881111137232 is an abundant number, since it is smaller than the sum of its proper divisors (3234888114288).

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

1881111137232 is a wasteful number, since it uses less digits than its factorization.

1881111137232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281092 (or 281086 counting only the distinct ones).

The product of its digits is 16128, while the sum is 39.

The spelling of 1881111137232 in words is "one trillion, eight hundred eighty-one billion, one hundred eleven million, one hundred thirty-seven thousand, two hundred thirty-two".