2011498781442 has 16 divisors (see below), whose sum is σ = 4234734276960. Its totient is φ = 635210141472.

The previous prime is 2011498781429. The next prime is 2011498781443. The reversal of 2011498781442 is 2441878941102.

It is a super-2 number, since 2×2011498781442² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011498781443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8822362963 + ... + 8822363190.

It is an arithmetic number, because the mean of its divisors is an integer number (264670892310).

Almost surely, 2^{2011498781442} is an apocalyptic number.

2011498781442 is an abundant number, since it is smaller than the sum of its proper divisors (2223235495518).

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

2011498781442 is a wasteful number, since it uses less digits than its factorization.

2011498781442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17644726177.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 2011498781442 in words is "two trillion, eleven billion, four hundred ninety-eight million, seven hundred eighty-one thousand, four hundred forty-two".