19047640000000 has 320 divisors, whose sum is σ = 49110268027392. Its totient is φ = 7372800000000.

The previous prime is 19047639999979. The next prime is 19047640000009. The reversal of 19047640000000 is 4674091.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19047640000009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1239992320 + ... + 1240007680.

Almost surely, 2^{19047640000000} is an apocalyptic number.

19047640000000 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 19047640000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24555134013696).

19047640000000 is an abundant number, since it is smaller than the sum of its proper divisors (30062628027392).

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

19047640000000 is an frugal number, since it uses more digits than its factorization.

19047640000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15445 (or 15399 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 19047640000000 its reverse (4674091), we get a palindrome (19047644674091).

The spelling of 19047640000000 in words is "nineteen trillion, forty-seven billion, six hundred forty million", and thus it is an aban number.