61006616011506 has 48 divisors (see below), whose sum is σ = 134936501650272. Its totient is φ = 18373437023040.

The previous prime is 61006616011487. The next prime is 61006616011529. The reversal of 61006616011506 is 60511061660016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257645931 + ... + 257882606.

It is an arithmetic number, because the mean of its divisors is an integer number (2811177117714).

Almost surely, 2^{61006616011506} is an apocalyptic number.

61006616011506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61006616011506 is an abundant number, since it is smaller than the sum of its proper divisors (73929885638766).

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

61006616011506 is a wasteful number, since it uses less digits than its factorization.

61006616011506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515528727 (or 515528716 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 61006616011506 in words is "sixty-one trillion, six billion, six hundred sixteen million, eleven thousand, five hundred six".