1046421231551 has 16 divisors (see below), whose sum is σ = 1057143866688. Its totient is φ = 1035756576000.

The previous prime is 1046421231491. The next prime is 1046421231563. The reversal of 1046421231551 is 1551321246401.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1046421231551 - 2¹⁴ = 1046421215167 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 (1046421291551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195553526 + ... + 195558876.

It is an arithmetic number, because the mean of its divisors is an integer number (66071491668).

Almost surely, 2^{1046421231551} is an apocalyptic number.

1046421231551 is a deficient number, since it is larger than the sum of its proper divisors (10722635137).

1046421231551 is a wasteful number, since it uses less digits than its factorization.

1046421231551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10402.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 1046421231551 its reverse (1551321246401), we get a palindrome (2597742477952).

The spelling of 1046421231551 in words is "one trillion, forty-six billion, four hundred twenty-one million, two hundred thirty-one thousand, five hundred fifty-one".