2139410226492 has 720 divisors, whose sum is σ = 7166442064320. Its totient is φ = 544665876480.

The previous prime is 2139410226449. The next prime is 2139410226533. The reversal of 2139410226492 is 2946220149312.

2139410226492 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 410 + 226 + 4 + 9 + 2 = 666.

It is a super-2 number, since 2×2139410226492² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 239 ways as a sum of consecutive naturals, for example, 5388942438 + ... + 5388942834.

It is an arithmetic number, because the mean of its divisors is an integer number (9953391756).

Almost surely, 2^{2139410226492} is an apocalyptic number.

2139410226492 is a gapful number since it is divisible by the number (22) 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 2139410226492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3583221032160).

2139410226492 is an abundant number, since it is smaller than the sum of its proper divisors (5027031837828).

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

2139410226492 is a wasteful number, since it uses less digits than its factorization.

2139410226492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 2139410226492 in words is "two trillion, one hundred thirty-nine billion, four hundred ten million, two hundred twenty-six thousand, four hundred ninety-two".