61615230602550 has 48 divisors (see below), whose sum is σ = 152810173421760. Its totient is φ = 16430254878240.

The previous prime is 61615230602539. The next prime is 61615230602557. The reversal of 61615230602550 is 5520603251616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61615230602557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675772 + ... + 11121471.

It is an arithmetic number, because the mean of its divisors is an integer number (3183545279620).

Almost surely, 2^{61615230602550} is an apocalyptic number.

61615230602550 is an abundant number, since it is smaller than the sum of its proper divisors (91194942819210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61615230602550 is a wasteful number, since it uses less digits than its factorization.

61615230602550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11832077 (or 11832072 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 61615230602550 in words is "sixty-one trillion, six hundred fifteen billion, two hundred thirty million, six hundred two thousand, five hundred fifty".