2660551554 has 16 divisors (see below), whose sum is σ = 5385213792. Its totient is φ = 876165408.

The previous prime is 2660551529. The next prime is 2660551571. The reversal of 2660551554 is 4551550662.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2670739 + ... + 2671734.

It is an arithmetic number, because the mean of its divisors is an integer number (336575862).

Almost surely, 2^2660551554 is an apocalyptic number.

2660551554 is an abundant number, since it is smaller than the sum of its proper divisors (2724662238).

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

2660551554 is a wasteful number, since it uses less digits than its factorization.

2660551554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342561.

The product of its (nonzero) digits is 180000, while the sum is 39.

The square root of 2660551554 is about 51580.5346424405. The cubic root of 2660551554 is about 1385.6617418406.

The spelling of 2660551554 in words is "two billion, six hundred sixty million, five hundred fifty-one thousand, five hundred fifty-four".