61330567887 has 6 divisors (see below), whose sum is σ = 88588598072. Its totient is φ = 40887045252.

The previous prime is 61330567829. The next prime is 61330567889. The reversal of 61330567887 is 78876503316.

It is not a de Polignac number, because 61330567887 - 2⁸ = 61330567631 is a prime.

It is a super-2 number, since 2×61330567887² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61330567889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3407253763 + ... + 3407253780.

Almost surely, 2^61330567887 is an apocalyptic number.

61330567887 is a deficient number, since it is larger than the sum of its proper divisors (27258030185).

61330567887 is a wasteful number, since it uses less digits than its factorization.

61330567887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814507549 (or 6814507546 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 61330567887 in words is "sixty-one billion, three hundred thirty million, five hundred sixty-seven thousand, eight hundred eighty-seven".