2661406352 has 40 divisors (see below), whose sum is σ = 5696480640. Its totient is φ = 1194410880.

The previous prime is 2661406351. The next prime is 2661406379. The reversal of 2661406352 is 2536041662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2661406351) 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, 81803 + ... + 109610.

It is an arithmetic number, because the mean of its divisors is an integer number (142412016).

Almost surely, 2^2661406352 is an apocalyptic number.

2661406352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2661406352 is an abundant number, since it is smaller than the sum of its proper divisors (3035074288).

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

2661406352 is a wasteful number, since it uses less digits than its factorization.

2661406352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191511 (or 191505 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2661406352 is about 51588.8200291497. The cubic root of 2661406352 is about 1385.8101238626.

The spelling of 2661406352 in words is "two billion, six hundred sixty-one million, four hundred six thousand, three hundred fifty-two".