61479519069887 has 48 divisors (see below), whose sum is σ = 69704224444800. Its totient is φ = 54005815281600.

The previous prime is 61479519069883. The next prime is 61479519069919. The reversal of 61479519069887 is 78896091597416.

It is not a de Polignac number, because 61479519069887 - 2² = 61479519069883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61479519069883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68922788 + ... + 69809094.

It is an arithmetic number, because the mean of its divisors is an integer number (1452171342600).

Almost surely, 2^{61479519069887} is an apocalyptic number.

61479519069887 is a deficient number, since it is larger than the sum of its proper divisors (8224705374913).

61479519069887 is a wasteful number, since it uses less digits than its factorization.

61479519069887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886548 (or 886517 counting only the distinct ones).

The product of its (nonzero) digits is 1646023680, while the sum is 80.

The spelling of 61479519069887 in words is "sixty-one trillion, four hundred seventy-nine billion, five hundred nineteen million, sixty-nine thousand, eight hundred eighty-seven".