66601431565042 has 32 divisors (see below), whose sum is σ = 110981572761600. Its totient is φ = 29722109398800.

The previous prime is 66601431564989. The next prime is 66601431565057. The reversal of 66601431565042 is 24056513410666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88828692 + ... + 89575327.

It is an arithmetic number, because the mean of its divisors is an integer number (3468174148800).

Almost surely, 2^{66601431565042} is an apocalyptic number.

66601431565042 is a deficient number, since it is larger than the sum of its proper divisors (44380141196558).

66601431565042 is a wasteful number, since it uses less digits than its factorization.

66601431565042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178404342.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 66601431565042 in words is "sixty-six trillion, six hundred one billion, four hundred thirty-one million, five hundred sixty-five thousand, forty-two".