2015554451554 has 128 divisors (see below), whose sum is σ = 3866893074432. Its totient is φ = 768148254720.

The previous prime is 2015554451527. The next prime is 2015554451597. The reversal of 2015554451554 is 4551544555102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55840797 + ... + 55876879.

It is an arithmetic number, because the mean of its divisors is an integer number (30210102144).

Almost surely, 2^{2015554451554} is an apocalyptic number.

2015554451554 is a deficient number, since it is larger than the sum of its proper divisors (1851338622878).

2015554451554 is a wasteful number, since it uses less digits than its factorization.

2015554451554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36320.

The product of its (nonzero) digits is 2000000, while the sum is 46.

The spelling of 2015554451554 in words is "two trillion, fifteen billion, five hundred fifty-four million, four hundred fifty-one thousand, five hundred fifty-four".