2661048690104 has 32 divisors (see below), whose sum is σ = 6002365468800. Its totient is φ = 1080425783520.

The previous prime is 2661048690061. The next prime is 2661048690109. The reversal of 2661048690104 is 4010968401662.

It is a happy number.

It is a super-2 number, since 2×2661048690104² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661048690109) 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, 1250491742 + ... + 1250493869.

It is an arithmetic number, because the mean of its divisors is an integer number (187573920900).

Almost surely, 2^{2661048690104} is an apocalyptic number.

It is an amenable number.

2661048690104 is an abundant number, since it is smaller than the sum of its proper divisors (3341316778696).

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

2661048690104 is a wasteful number, since it uses less digits than its factorization.

2661048690104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500985643 (or 2500985639 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 2661048690104 in words is "two trillion, six hundred sixty-one billion, forty-eight million, six hundred ninety thousand, one hundred four".