561332546673251 has 8 divisors (see below), whose sum is σ = 586635305467680. Its totient is φ = 536104537536832.

The previous prime is 561332546673109. The next prime is 561332546673257. The reversal of 561332546673251 is 152376645233165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561332546673251 - 2⁴² = 556934500162147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561332546673257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18687399146 + ... + 18687429183.

It is an arithmetic number, because the mean of its divisors is an integer number (73329413183460).

Almost surely, 2^{561332546673251} is an apocalyptic number.

561332546673251 is a deficient number, since it is larger than the sum of its proper divisors (25302758794429).

561332546673251 is a wasteful number, since it uses less digits than its factorization.

561332546673251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37374829005.

The product of its digits is 81648000, while the sum is 59.

The spelling of 561332546673251 in words is "five hundred sixty-one trillion, three hundred thirty-two billion, five hundred forty-six million, six hundred seventy-three thousand, two hundred fifty-one".