2026155781740 has 144 divisors (see below), whose sum is σ = 6028881207552. Its totient is φ = 508331756544.

The previous prime is 2026155781729. The next prime is 2026155781759. The reversal of 2026155781740 is 471875516202.

It is a self number, because there is not a number n which added to its sum of digits gives 2026155781740.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48583177 + ... + 48624863.

It is an arithmetic number, because the mean of its divisors is an integer number (41867230608).

Almost surely, 2^{2026155781740} is an apocalyptic number.

2026155781740 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 2026155781740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3014440603776).

2026155781740 is an abundant number, since it is smaller than the sum of its proper divisors (4002725425812).

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

2026155781740 is a wasteful number, since it uses less digits than its factorization.

2026155781740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44536 (or 44517 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 2026155781740 in words is "two trillion, twenty-six billion, one hundred fifty-five million, seven hundred eighty-one thousand, seven hundred forty".