61500501065649 has 64 divisors (see below), whose sum is σ = 85481130180096. Its totient is φ = 39299115331584.

The previous prime is 61500501065639. The next prime is 61500501065657. The reversal of 61500501065649 is 94656010500516.

It is not a de Polignac number, because 61500501065649 - 2⁵ = 61500501065617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61500501065598 and 61500501065607.

It is not an unprimeable number, because it can be changed into a prime (61500501065639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1016557369 + ... + 1016617865.

It is an arithmetic number, because the mean of its divisors is an integer number (1335642659064).

Almost surely, 2^{61500501065649} is an apocalyptic number.

It is an amenable number.

61500501065649 is a deficient number, since it is larger than the sum of its proper divisors (23980629114447).

61500501065649 is a wasteful number, since it uses less digits than its factorization.

61500501065649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61194.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 61500501065649 in words is "sixty-one trillion, five hundred billion, five hundred one million, sixty-five thousand, six hundred forty-nine".