1500001045551 has 6 divisors (see below), whose sum is σ = 2166668176920. Its totient is φ = 1000000697028.

The previous prime is 1500001045513. The next prime is 1500001045567. The reversal of 1500001045551 is 1555401000051.

1500001045551 is a `hidden beast` number, since 1 + 5 + 0 + 0 + 0 + 0 + 104 + 5 + 551 = 666.

It is not a de Polignac number, because 1500001045551 - 2⁷ = 1500001045423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500001045051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83333391411 + ... + 83333391428.

It is an arithmetic number, because the mean of its divisors is an integer number (361111362820).

Almost surely, 2^{1500001045551} is an apocalyptic number.

1500001045551 is a deficient number, since it is larger than the sum of its proper divisors (666667131369).

1500001045551 is a wasteful number, since it uses less digits than its factorization.

1500001045551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166666782845 (or 166666782842 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 1500001045551 in words is "one trillion, five hundred billion, one million, forty-five thousand, five hundred fifty-one".