15678000540000 has 360 divisors, whose sum is σ = 55776218890392. Its totient is φ = 4176023040000.

The previous prime is 15678000539987. The next prime is 15678000540001. The reversal of 15678000540000 is 4500087651.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15678000540001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 158890680 + ... + 158989320.

Almost surely, 2^{15678000540000} is an apocalyptic number.

15678000540000 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 15678000540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27888109445196).

15678000540000 is an abundant number, since it is smaller than the sum of its proper divisors (40098218350392).

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

15678000540000 is an equidigital number, since it uses as much as digits as its factorization.

15678000540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99560 (or 99534 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 15678000540000 in words is "fifteen trillion, six hundred seventy-eight billion, five hundred forty thousand".