2661962111040 has 224 divisors, whose sum is σ = 8711523327744. Its totient is φ = 688175308800.

The previous prime is 2661962110967. The next prime is 2661962111063. The reversal of 2661962111040 is 401112691662.

It is a super-2 number, since 2×2661962111040² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2661962111040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9703765 + ... + 9974315.

Almost surely, 2^{2661962111040} is an apocalyptic number.

2661962111040 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 2661962111040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4355761663872).

2661962111040 is an abundant number, since it is smaller than the sum of its proper divisors (6049561216704).

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

2661962111040 is a wasteful number, since it uses less digits than its factorization.

2661962111040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270885 (or 270875 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 2661962111040 in words is "two trillion, six hundred sixty-one billion, nine hundred sixty-two million, one hundred eleven thousand, forty".