2151551506475 has 12 divisors (see below), whose sum is σ = 3049055849424. Its totient is φ = 1475349604320.

The previous prime is 2151551506397. The next prime is 2151551506483. The reversal of 2151551506475 is 5746051551512.

It is not a de Polignac number, because 2151551506475 - 2¹² = 2151551502379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6147289844 + ... + 6147290193.

It is an arithmetic number, because the mean of its divisors is an integer number (254087987452).

Almost surely, 2^{2151551506475} is an apocalyptic number.

2151551506475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2151551506475 is a deficient number, since it is larger than the sum of its proper divisors (897504342949).

2151551506475 is a wasteful number, since it uses less digits than its factorization.

2151551506475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12294580054 (or 12294580049 counting only the distinct ones).

The product of its (nonzero) digits is 1050000, while the sum is 47.

The spelling of 2151551506475 in words is "two trillion, one hundred fifty-one billion, five hundred fifty-one million, five hundred six thousand, four hundred seventy-five".