61410534251 has 4 divisors (see below), whose sum is σ = 66993310104. Its totient is φ = 55827758400.

The previous prime is 61410534223. The next prime is 61410534257. The reversal of 61410534251 is 15243501416.

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 61410534251 - 2¹⁸ = 61410272107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61410534257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791387910 + ... + 2791387931.

It is an arithmetic number, because the mean of its divisors is an integer number (16748327526).

Almost surely, 2^61410534251 is an apocalyptic number.

61410534251 is a deficient number, since it is larger than the sum of its proper divisors (5582775853).

61410534251 is a wasteful number, since it uses less digits than its factorization.

61410534251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582775852.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 61410534251 in words is "sixty-one billion, four hundred ten million, five hundred thirty-four thousand, two hundred fifty-one".