2139155509140 has 384 divisors, whose sum is σ = 7550258688000. Its totient is φ = 498453668352.

The previous prime is 2139155509111. The next prime is 2139155509147. The reversal of 2139155509140 is 419055519312.

2139155509140 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 1 + 5 + 550 + 91 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139155509147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 190327641 + ... + 190338879.

It is an arithmetic number, because the mean of its divisors is an integer number (19662132000).

Almost surely, 2^{2139155509140} is an apocalyptic number.

2139155509140 is a gapful number since it is divisible by the number (20) 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 2139155509140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3775129344000).

2139155509140 is an abundant number, since it is smaller than the sum of its proper divisors (5411103178860).

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

2139155509140 is a wasteful number, since it uses less digits than its factorization.

2139155509140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12716 (or 12708 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 2139155509140 in words is "two trillion, one hundred thirty-nine billion, one hundred fifty-five million, five hundred nine thousand, one hundred forty".