1660015510057 has 2 divisors, whose sum is σ = 1660015510058. Its totient is φ = 1660015510056.

The previous prime is 1660015509967. The next prime is 1660015510061. The reversal of 1660015510057 is 7500155100661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1392673773456 + 267341736601 = 1180116^2 + 517051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660015510057 - 2²³ = 1660007121449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1660015509998 and 1660015510025.

It is not a weakly prime, because it can be changed into another prime (1660015510157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830007755028 + 830007755029.

It is an arithmetic number, because the mean of its divisors is an integer number (830007755029).

Almost surely, 2^{1660015510057} is an apocalyptic number.

It is an amenable number.

1660015510057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660015510057 is an equidigital number, since it uses as much as digits as its factorization.

1660015510057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 37.

The spelling of 1660015510057 in words is "one trillion, six hundred sixty billion, fifteen million, five hundred ten thousand, fifty-seven".