157066512217 has 16 divisors (see below), whose sum is σ = 166703054400. Its totient is φ = 147474404352.

The previous prime is 157066512191. The next prime is 157066512269. The reversal of 157066512217 is 712215660751.

It is a cyclic number.

It is not a de Polignac number, because 157066512217 - 2¹⁹ = 157065987929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157066512817) 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, 35997478 + ... + 36001840.

It is an arithmetic number, because the mean of its divisors is an integer number (10418940900).

Almost surely, 2^157066512217 is an apocalyptic number.

157066512217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

157066512217 is a deficient number, since it is larger than the sum of its proper divisors (9636542183).

157066512217 is a wasteful number, since it uses less digits than its factorization.

157066512217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 157066512217 in words is "one hundred fifty-seven billion, sixty-six million, five hundred twelve thousand, two hundred seventeen".