16665151487 has 2 divisors, whose sum is σ = 16665151488. Its totient is φ = 16665151486.

The previous prime is 16665151471. The next prime is 16665151499. The reversal of 16665151487 is 78415156661.

It is a strong prime.

It is an emirp because it is prime and its reverse (78415156661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16665151487 - 2⁴ = 16665151471 is a prime.

It is a super-2 number, since 2×16665151487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16665151787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332575743 + 8332575744.

It is an arithmetic number, because the mean of its divisors is an integer number (8332575744).

Almost surely, 2^16665151487 is an apocalyptic number.

16665151487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16665151487 is an equidigital number, since it uses as much as digits as its factorization.

16665151487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The spelling of 16665151487 in words is "sixteen billion, six hundred sixty-five million, one hundred fifty-one thousand, four hundred eighty-seven".