66650061001511 has 8 divisors (see below), whose sum is σ = 71778679946064. Its totient is φ = 61521683653440.

The previous prime is 66650061001487. The next prime is 66650061001529. The reversal of 66650061001511 is 11510016005666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66650061001511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66650061001571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59825945 + ... + 60929826.

It is an arithmetic number, because the mean of its divisors is an integer number (8972334993258).

Almost surely, 2^{66650061001511} is an apocalyptic number.

66650061001511 is a deficient number, since it is larger than the sum of its proper divisors (5128618944553).

66650061001511 is a wasteful number, since it uses less digits than its factorization.

66650061001511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120798241.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 66650061001511 in words is "sixty-six trillion, six hundred fifty billion, sixty-one million, one thousand, five hundred eleven".