4261531630551 has 32 divisors (see below), whose sum is σ = 6533663549952. Its totient is φ = 2450123786880.

The previous prime is 4261531630523. The next prime is 4261531630591. The reversal of 4261531630551 is 1550361351624.

It is a happy number.

It is not a de Polignac number, because 4261531630551 - 2⁹ = 4261531630039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4261531630591) 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 31 ways as a sum of consecutive naturals, for example, 55204120 + ... + 55281261.

It is an arithmetic number, because the mean of its divisors is an integer number (204176985936).

Almost surely, 2^{4261531630551} is an apocalyptic number.

4261531630551 is a deficient number, since it is larger than the sum of its proper divisors (2272131919401).

4261531630551 is a wasteful number, since it uses less digits than its factorization.

4261531630551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110485463.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 4261531630551 in words is "four trillion, two hundred sixty-one billion, five hundred thirty-one million, six hundred thirty thousand, five hundred fifty-one".