6660375554 has 32 divisors (see below), whose sum is σ = 11532288000. Its totient is φ = 2825918928.

The previous prime is 6660375541. The next prime is 6660375563. The reversal of 6660375554 is 4555730666.

It is a junction number, because it is equal to n+sod(n) for n = 6660375499 and 6660375508.

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, 883469 + ... + 890975.

It is an arithmetic number, because the mean of its divisors is an integer number (360384000).

Almost surely, 2^6660375554 is an apocalyptic number.

6660375554 is a deficient number, since it is larger than the sum of its proper divisors (4871912446).

6660375554 is a wasteful number, since it uses less digits than its factorization.

6660375554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8142.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The square root of 6660375554 is about 81611.1239599112. The cubic root of 6660375554 is about 1881.4798550742.

The spelling of 6660375554 in words is "six billion, six hundred sixty million, three hundred seventy-five thousand, five hundred fifty-four".