64142181487 has 2 divisors, whose sum is σ = 64142181488. Its totient is φ = 64142181486.

The previous prime is 64142181457. The next prime is 64142181511. The reversal of 64142181487 is 78418124146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64142181487 is a prime.

It is a super-2 number, since 2×64142181487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64142181457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32071090743 + 32071090744.

It is an arithmetic number, because the mean of its divisors is an integer number (32071090744).

Almost surely, 2^64142181487 is an apocalyptic number.

64142181487 is a deficient number, since it is larger than the sum of its proper divisors (1).

64142181487 is an equidigital number, since it uses as much as digits as its factorization.

64142181487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 46.

The spelling of 64142181487 in words is "sixty-four billion, one hundred forty-two million, one hundred eighty-one thousand, four hundred eighty-seven".