1045421622551 has 4 divisors (see below), whose sum is σ = 1069733753352. Its totient is φ = 1021109491752.

The previous prime is 1045421622547. The next prime is 1045421622563. The reversal of 1045421622551 is 1552261245401.

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 1045421622551 - 2² = 1045421622547 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 (1045421622541) 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, 12156065336 + ... + 12156065421.

It is an arithmetic number, because the mean of its divisors is an integer number (267433438338).

Almost surely, 2^{1045421622551} is an apocalyptic number.

1045421622551 is a deficient number, since it is larger than the sum of its proper divisors (24312130801).

1045421622551 is an equidigital number, since it uses as much as digits as its factorization.

1045421622551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24312130800.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 1045421622551 its reverse (1552261245401), we get a palindrome (2597682867952).

The spelling of 1045421622551 in words is "one trillion, forty-five billion, four hundred twenty-one million, six hundred twenty-two thousand, five hundred fifty-one".