2231552011551 has 16 divisors (see below), whose sum is σ = 3049446664704. Its totient is φ = 1450903048704.

The previous prime is 2231552011537. The next prime is 2231552011553. The reversal of 2231552011551 is 1551102551322.

It is not a de Polignac number, because 2231552011551 - 2⁵ = 2231552011519 is a prime.

It is a super-3 number, since 3×2231552011551³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231552011553) 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 15 ways as a sum of consecutive naturals, for example, 27922306 + ... + 28002111.

It is an arithmetic number, because the mean of its divisors is an integer number (190590416544).

Almost surely, 2^{2231552011551} is an apocalyptic number.

2231552011551 is a deficient number, since it is larger than the sum of its proper divisors (817894653153).

2231552011551 is a wasteful number, since it uses less digits than its factorization.

2231552011551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55924750.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 2231552011551 its reverse (1551102551322), we get a palindrome (3782654562873).

The spelling of 2231552011551 in words is "two trillion, two hundred thirty-one billion, five hundred fifty-two million, eleven thousand, five hundred fifty-one".