61021087047 has 16 divisors (see below), whose sum is σ = 92325050880. Its totient is φ = 39815176536.

The previous prime is 61021087033. The next prime is 61021087091. The reversal of 61021087047 is 74078012016.

It is not a de Polignac number, because 61021087047 - 2¹² = 61021082951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61021089047) 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, 24041713 + ... + 24044250.

It is an arithmetic number, because the mean of its divisors is an integer number (5770315680).

Almost surely, 2^61021087047 is an apocalyptic number.

61021087047 is a deficient number, since it is larger than the sum of its proper divisors (31303963833).

61021087047 is a wasteful number, since it uses less digits than its factorization.

61021087047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48086019 (or 48086013 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 61021087047 in words is "sixty-one billion, twenty-one million, eighty-seven thousand, forty-seven".