1232000401551 has 4 divisors (see below), whose sum is σ = 1642667202072. Its totient is φ = 821333601032.

The previous prime is 1232000401519. The next prime is 1232000401561. The reversal of 1232000401551 is 1551040002321.

It is a happy number.

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 1232000401551 - 2⁵ = 1232000401519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232000401561) 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, 205333400256 + ... + 205333400261.

It is an arithmetic number, because the mean of its divisors is an integer number (410666800518).

Almost surely, 2^{1232000401551} is an apocalyptic number.

1232000401551 is a deficient number, since it is larger than the sum of its proper divisors (410666800521).

1232000401551 is an equidigital number, since it uses as much as digits as its factorization.

1232000401551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410666800520.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 1232000401551 its reverse (1551040002321), we get a palindrome (2783040403872).

The spelling of 1232000401551 in words is "one trillion, two hundred thirty-two billion, four hundred one thousand, five hundred fifty-one".