2601555012 has 72 divisors (see below), whose sum is σ = 7911176000. Its totient is φ = 704179008.

The previous prime is 2601555007. The next prime is 2601555013. The reversal of 2601555012 is 2105551062.

2601555012 is a `hidden beast` number, since 2 + 6 + 0 + 155 + 501 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (2601555013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266887 + ... + 276462.

Almost surely, 2^2601555012 is an apocalyptic number.

It is an amenable number.

2601555012 is an abundant number, since it is smaller than the sum of its proper divisors (5309620988).

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

2601555012 is a wasteful number, since it uses less digits than its factorization.

2601555012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543385 (or 543380 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 2601555012 is about 51005.4410038772. The cubic root of 2601555012 is about 1375.3429468752.

The spelling of 2601555012 in words is "two billion, six hundred one million, five hundred fifty-five thousand, twelve".