61532632377217 has 4 divisors (see below), whose sum is σ = 61560337301716. Its totient is φ = 61504927452720.

The previous prime is 61532632377193. The next prime is 61532632377221. The reversal of 61532632377217 is 71277323623516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31602881262736 + 29929751114481 = 5621644^2 + 5470809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61532632377217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61532632377277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13852458918 + ... + 13852463359.

It is an arithmetic number, because the mean of its divisors is an integer number (15390084325429).

Almost surely, 2^{61532632377217} is an apocalyptic number.

It is an amenable number.

61532632377217 is a deficient number, since it is larger than the sum of its proper divisors (27704924499).

61532632377217 is a wasteful number, since it uses less digits than its factorization.

61532632377217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27704924498.

The product of its digits is 13335840, while the sum is 55.

The spelling of 61532632377217 in words is "sixty-one trillion, five hundred thirty-two billion, six hundred thirty-two million, three hundred seventy-seven thousand, two hundred seventeen".