2155347152551 has 4 divisors (see below), whose sum is σ = 2160616950400. Its totient is φ = 2150077354704.

The previous prime is 2155347152533. The next prime is 2155347152587. The reversal of 2155347152551 is 1552517435512.

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 2155347152551 - 2¹³ = 2155347144359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155347152521) 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, 2634898311 + ... + 2634899128.

It is an arithmetic number, because the mean of its divisors is an integer number (540154237600).

Almost surely, 2^{2155347152551} is an apocalyptic number.

2155347152551 is a deficient number, since it is larger than the sum of its proper divisors (5269797849).

2155347152551 is an equidigital number, since it uses as much as digits as its factorization.

2155347152551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269797848.

The product of its digits is 1050000, while the sum is 46.

The spelling of 2155347152551 in words is "two trillion, one hundred fifty-five billion, three hundred forty-seven million, one hundred fifty-two thousand, five hundred fifty-one".