2661061612 has 48 divisors (see below), whose sum is σ = 5407208352. Its totient is φ = 1132462080.

The previous prime is 2661061537. The next prime is 2661061633. The reversal of 2661061612 is 2161601662.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135148 + ... + 153580.

It is an arithmetic number, because the mean of its divisors is an integer number (112650174).

Almost surely, 2^2661061612 is an apocalyptic number.

2661061612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2661061612 is an abundant number, since it is smaller than the sum of its proper divisors (2746146740).

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

2661061612 is a wasteful number, since it uses less digits than its factorization.

2661061612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18658 (or 18656 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2661061612 is about 51585.4786931361. The cubic root of 2661061612 is about 1385.7502852224.

The spelling of 2661061612 in words is "two billion, six hundred sixty-one million, sixty-one thousand, six hundred twelve".