61271632372 has 6 divisors (see below), whose sum is σ = 107225356658. Its totient is φ = 30635816184.

The previous prime is 61271632363. The next prime is 61271632379. The reversal of 61271632372 is 27323617216.

It can be written as a sum of positive squares in only one way, i.e., 38571388816 + 22700243556 = 196396^2 + 150666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61271632379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658954043 + ... + 7658954050.

Almost surely, 2^61271632372 is an apocalyptic number.

It is an amenable number.

61271632372 is a deficient number, since it is larger than the sum of its proper divisors (45953724286).

61271632372 is a wasteful number, since it uses less digits than its factorization.

61271632372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15317908097 (or 15317908095 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The spelling of 61271632372 in words is "sixty-one billion, two hundred seventy-one million, six hundred thirty-two thousand, three hundred seventy-two".