77142563 has 2 divisors, whose sum is σ = 77142564. Its totient is φ = 77142562.

The previous prime is 77142517. The next prime is 77142577. The reversal of 77142563 is 36524177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77142563 - 2²² = 72948259 is a prime.

It is not a weakly prime, because it can be changed into another prime (77142503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38571281 + 38571282.

It is an arithmetic number, because the mean of its divisors is an integer number (38571282).

Almost surely, 2^77142563 is an apocalyptic number.

77142563 is a deficient number, since it is larger than the sum of its proper divisors (1).

77142563 is an equidigital number, since it uses as much as digits as its factorization.

77142563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 77142563 is about 8783.0839117021. The cubic root of 77142563 is about 425.6944825373.

It can be divided in two parts, 771 and 42563, that added together give a palindrome (43334).

The spelling of 77142563 in words is "seventy-seven million, one hundred forty-two thousand, five hundred sixty-three".