61761256527 has 16 divisors (see below), whose sum is σ = 82900800000. Its totient is φ = 40898636064.

The previous prime is 61761256519. The next prime is 61761256537. The reversal of 61761256527 is 72565216716.

It is not a de Polignac number, because 61761256527 - 2³ = 61761256519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61761256537) 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 15 ways as a sum of consecutive naturals, for example, 271249 + ... + 443957.

It is an arithmetic number, because the mean of its divisors is an integer number (5181300000).

Almost surely, 2^61761256527 is an apocalyptic number.

61761256527 is a deficient number, since it is larger than the sum of its proper divisors (21139543473).

61761256527 is a wasteful number, since it uses less digits than its factorization.

61761256527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173510.

The product of its digits is 1058400, while the sum is 48.

The spelling of 61761256527 in words is "sixty-one billion, seven hundred sixty-one million, two hundred fifty-six thousand, five hundred twenty-seven".