66540150101057 has 2 divisors, whose sum is σ = 66540150101058. Its totient is φ = 66540150101056.

The previous prime is 66540150100871. The next prime is 66540150101141. The reversal of 66540150101057 is 75010105104566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63892269373696 + 2647880727361 = 7993264^2 + 1627231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66540150101057 is a prime.

It is not a weakly prime, because it can be changed into another prime (66540150191057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33270075050528 + 33270075050529.

It is an arithmetic number, because the mean of its divisors is an integer number (33270075050529).

Almost surely, 2^{66540150101057} is an apocalyptic number.

It is an amenable number.

66540150101057 is a deficient number, since it is larger than the sum of its proper divisors (1).

66540150101057 is an equidigital number, since it uses as much as digits as its factorization.

66540150101057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 66540150101057 in words is "sixty-six trillion, five hundred forty billion, one hundred fifty million, one hundred one thousand, fifty-seven".