61253423551 has 8 divisors (see below), whose sum is σ = 63369154800. Its totient is φ = 59137928640.

The previous prime is 61253423533. The next prime is 61253423573. The reversal of 61253423551 is 15532435216.

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

It is a cyclic number.

It is not a de Polignac number, because 61253423551 - 2⁵ = 61253423519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61253423551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253423851) 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, 588780 + ... + 684958.

It is an arithmetic number, because the mean of its divisors is an integer number (7921144350).

Almost surely, 2^61253423551 is an apocalyptic number.

61253423551 is a deficient number, since it is larger than the sum of its proper divisors (2115731249).

61253423551 is a wasteful number, since it uses less digits than its factorization.

61253423551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118169.

The product of its digits is 108000, while the sum is 37.

Adding to 61253423551 its reverse (15532435216), we get a palindrome (76785858767).

The spelling of 61253423551 in words is "sixty-one billion, two hundred fifty-three million, four hundred twenty-three thousand, five hundred fifty-one".