61347487885 has 8 divisors (see below), whose sum is σ = 73723526496. Its totient is φ = 49006962960.

The previous prime is 61347487879. The next prime is 61347487889. The reversal of 61347487885 is 58878474316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61347487885 - 2¹³ = 61347479693 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 (61347487889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8874619 + ... + 8881528.

It is an arithmetic number, because the mean of its divisors is an integer number (9215440812).

Almost surely, 2^61347487885 is an apocalyptic number.

It is an amenable number.

61347487885 is a deficient number, since it is larger than the sum of its proper divisors (12376038611).

61347487885 is a wasteful number, since it uses less digits than its factorization.

61347487885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756843.

The product of its digits is 36126720, while the sum is 61.

The spelling of 61347487885 in words is "sixty-one billion, three hundred forty-seven million, four hundred eighty-seven thousand, eight hundred eighty-five".