66152071678 has 48 divisors (see below), whose sum is σ = 131418359424. Its totient is φ = 24257427840.

The previous prime is 66152071637. The next prime is 66152071721. The reversal of 66152071678 is 87617025166.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 698676 + ... + 787687.

It is an arithmetic number, because the mean of its divisors is an integer number (2737882488).

Almost surely, 2^66152071678 is an apocalyptic number.

66152071678 is a deficient number, since it is larger than the sum of its proper divisors (65266287746).

66152071678 is a wasteful number, since it uses less digits than its factorization.

66152071678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486417 (or 1486400 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 66152071678 in words is "sixty-six billion, one hundred fifty-two million, seventy-one thousand, six hundred seventy-eight".