61500714066 has 24 divisors (see below), whose sum is σ = 145365324624. Its totient is φ = 18636579960.

The previous prime is 61500714049. The next prime is 61500714089. The reversal of 61500714066 is 66041700516.

61500714066 is a `hidden beast` number, since 6 + 1 + 500 + 7 + 140 + 6 + 6 = 666.

61500714066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61500714066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155304636 + ... + 155305031.

It is an arithmetic number, because the mean of its divisors is an integer number (6056888526).

Almost surely, 2^61500714066 is an apocalyptic number.

61500714066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61500714066 is an abundant number, since it is smaller than the sum of its proper divisors (83864610558).

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

61500714066 is a wasteful number, since it uses less digits than its factorization.

61500714066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310609686 (or 310609683 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 61500714066 in words is "sixty-one billion, five hundred million, seven hundred fourteen thousand, sixty-six".