2151533146551 has 4 divisors (see below), whose sum is σ = 2868710862072. Its totient is φ = 1434355431032.

The previous prime is 2151533146523. The next prime is 2151533146589. The reversal of 2151533146551 is 1556413351512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2151533146551 - 2¹¹ = 2151533144503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151533146501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358588857756 + ... + 358588857761.

It is an arithmetic number, because the mean of its divisors is an integer number (717177715518).

Almost surely, 2^{2151533146551} is an apocalyptic number.

2151533146551 is a deficient number, since it is larger than the sum of its proper divisors (717177715521).

2151533146551 is an equidigital number, since it uses as much as digits as its factorization.

2151533146551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717177715520.

The product of its digits is 270000, while the sum is 42.

The spelling of 2151533146551 in words is "two trillion, one hundred fifty-one billion, five hundred thirty-three million, one hundred forty-six thousand, five hundred fifty-one".