1234051042551 has 4 divisors (see below), whose sum is σ = 1645401390072. Its totient is φ = 822700695032.

The previous prime is 1234051042547. The next prime is 1234051042591. The reversal of 1234051042551 is 1552401504321.

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 1234051042551 - 2² = 1234051042547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234051042501) 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 3 ways as a sum of consecutive naturals, for example, 205675173756 + ... + 205675173761.

It is an arithmetic number, because the mean of its divisors is an integer number (411350347518).

Almost surely, 2^{1234051042551} is an apocalyptic number.

1234051042551 is a deficient number, since it is larger than the sum of its proper divisors (411350347521).

1234051042551 is an equidigital number, since it uses as much as digits as its factorization.

1234051042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411350347520.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 1234051042551 its reverse (1552401504321), we get a palindrome (2786452546872).

The spelling of 1234051042551 in words is "one trillion, two hundred thirty-four billion, fifty-one million, forty-two thousand, five hundred fifty-one".