61517227432 has 8 divisors (see below), whose sum is σ = 115344801450. Its totient is φ = 30758613712.

The previous prime is 61517227411. The next prime is 61517227441. The reversal of 61517227432 is 23472271516.

61517227432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61437553956 + 79673476 = 247866^2 + 8926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3844826707 + ... + 3844826722.

Almost surely, 2^61517227432 is an apocalyptic number.

It is an amenable number.

61517227432 is a deficient number, since it is larger than the sum of its proper divisors (53827574018).

61517227432 is a wasteful number, since it uses less digits than its factorization.

61517227432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689653435 (or 7689653431 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

Adding to 61517227432 its reverse (23472271516), we get a palindrome (84989498948).

The spelling of 61517227432 in words is "sixty-one billion, five hundred seventeen million, two hundred twenty-seven thousand, four hundred thirty-two".