66570455097 has 16 divisors (see below), whose sum is σ = 103813576000. Its totient is φ = 42044497632.

The previous prime is 66570455071. The next prime is 66570455101. The reversal of 66570455097 is 79055407566.

66570455097 is a `hidden beast` number, since 6 + 65 + 70 + 4 + 5 + 509 + 7 = 666.

It is not a de Polignac number, because 66570455097 - 2⁷ = 66570454969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66570455297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64882972 + ... + 64883997.

It is an arithmetic number, because the mean of its divisors is an integer number (6488348500).

Almost surely, 2^66570455097 is an apocalyptic number.

It is an amenable number.

66570455097 is a deficient number, since it is larger than the sum of its proper divisors (37243120903).

66570455097 is a wasteful number, since it uses less digits than its factorization.

66570455097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129766997 (or 129766991 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 54.

It can be divided in two parts, 665704 and 55097, that added together give a square (720801 = 849²).

The spelling of 66570455097 in words is "sixty-six billion, five hundred seventy million, four hundred fifty-five thousand, ninety-seven".