61066115500 has 96 divisors (see below), whose sum is σ = 149872544640. Its totient is φ = 21567110400.

The previous prime is 61066115489. The next prime is 61066115581. The reversal of 61066115500 is 551166016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54735 + ... + 353734.

It is an arithmetic number, because the mean of its divisors is an integer number (1561172340).

Almost surely, 2^61066115500 is an apocalyptic number.

It is an amenable number.

61066115500 is an abundant number, since it is smaller than the sum of its proper divisors (88806429140).

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

61066115500 is a wasteful number, since it uses less digits than its factorization.

61066115500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408524 (or 408512 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 61066115500 in words is "sixty-one billion, sixty-six million, one hundred fifteen thousand, five hundred".