61283615615 has 8 divisors (see below), whose sum is σ = 73544235120. Its totient is φ = 49024294912.

The previous prime is 61283615611. The next prime is 61283615623. The reversal of 61283615615 is 51651638216.

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

It is a cyclic number.

It is not a de Polignac number, because 61283615615 - 2² = 61283615611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61283615611) 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, 217685 + ... + 412254.

It is an arithmetic number, because the mean of its divisors is an integer number (9193029390).

Almost surely, 2^61283615615 is an apocalyptic number.

61283615615 is a deficient number, since it is larger than the sum of its proper divisors (12260619505).

61283615615 is a wasteful number, since it uses less digits than its factorization.

61283615615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649401.

The product of its digits is 259200, while the sum is 44.

The spelling of 61283615615 in words is "sixty-one billion, two hundred eighty-three million, six hundred fifteen thousand, six hundred fifteen".