19387540344312 has 48 divisors (see below), whose sum is σ = 60009053448240. Its totient is φ = 5539297241088.

The previous prime is 19387540344311. The next prime is 19387540344323. The reversal of 19387540344312 is 21344304578391.

19387540344312 is a `hidden beast` number, since 1 + 9 + 3 + 87 + 540 + 3 + 4 + 4 + 3 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19387540344311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19233670473 + ... + 19233671480.

It is an arithmetic number, because the mean of its divisors is an integer number (1250188613505).

Almost surely, 2^{19387540344312} is an apocalyptic number.

19387540344312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19387540344312 is an abundant number, since it is smaller than the sum of its proper divisors (40621513103928).

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

19387540344312 is a wasteful number, since it uses less digits than its factorization.

19387540344312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38467341972 (or 38467341965 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 19387540344312 in words is "nineteen trillion, three hundred eighty-seven billion, five hundred forty million, three hundred forty-four thousand, three hundred twelve".