651232444551 has 16 divisors (see below), whose sum is σ = 937928100480. Its totient is φ = 399547668960.

The previous prime is 651232444531. The next prime is 651232444571. The reversal of 651232444551 is 155444232156.

It is an interprime number because it is at equal distance from previous prime (651232444531) and next prime (651232444571).

It is not a de Polignac number, because 651232444551 - 2¹⁴ = 651232428167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651232444531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25211061 + ... + 25236878.

It is an arithmetic number, because the mean of its divisors is an integer number (58620506280).

Almost surely, 2^651232444551 is an apocalyptic number.

651232444551 is a deficient number, since it is larger than the sum of its proper divisors (286695655929).

651232444551 is a wasteful number, since it uses less digits than its factorization.

651232444551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50448286.

The product of its digits is 576000, while the sum is 42.

The spelling of 651232444551 in words is "six hundred fifty-one billion, two hundred thirty-two million, four hundred forty-four thousand, five hundred fifty-one".