2154387388608 has 1680 divisors, whose sum is σ = 8394615915840. Its totient is φ = 531839582208.

The previous prime is 2154387388603. The next prime is 2154387388633. The reversal of 2154387388608 is 8068837834512.

2154387388608 is a `hidden beast` number, since 2 + 1 + 543 + 8 + 7 + 3 + 8 + 86 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (2154387388603) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 22210179216 + ... + 22210179312.

It is an arithmetic number, because the mean of its divisors is an integer number (4996795188).

Almost surely, 2^{2154387388608} is an apocalyptic number.

2154387388608 is a gapful number since it is divisible by the number (28) 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 2154387388608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4197307957920).

2154387388608 is an abundant number, since it is smaller than the sum of its proper divisors (6240228527232).

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

2154387388608 is a wasteful number, since it uses less digits than its factorization.

2154387388608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 2154387388608 in words is "two trillion, one hundred fifty-four billion, three hundred eighty-seven million, three hundred eighty-eight thousand, six hundred eight".