61500501065650 has 24 divisors (see below), whose sum is σ = 118080962049024. Its totient is φ = 23806645573200.

The previous prime is 61500501065639. The next prime is 61500501065657. The reversal of 61500501065650 is 5656010500516.

It is not an unprimeable number, because it can be changed into a prime (61500501065657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19838869762 + ... + 19838872861.

It is an arithmetic number, because the mean of its divisors is an integer number (4920040085376).

Almost surely, 2^{61500501065650} is an apocalyptic number.

61500501065650 is a deficient number, since it is larger than the sum of its proper divisors (56580460983374).

61500501065650 is a wasteful number, since it uses less digits than its factorization.

61500501065650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39677742666 (or 39677742661 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 61500501065650 in words is "sixty-one trillion, five hundred billion, five hundred one million, sixty-five thousand, six hundred fifty".