77521565063 has 2 divisors, whose sum is σ = 77521565064. Its totient is φ = 77521565062.

The previous prime is 77521565041. The next prime is 77521565101. The reversal of 77521565063 is 36056512577.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77521565063 - 2¹⁶ = 77521499527 is a prime.

It is a super-3 number, since 3×77521565063³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77521564999 and 77521565017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77521555063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38760782531 + 38760782532.

It is an arithmetic number, because the mean of its divisors is an integer number (38760782532).

Almost surely, 2^77521565063 is an apocalyptic number.

77521565063 is a deficient number, since it is larger than the sum of its proper divisors (1).

77521565063 is an equidigital number, since it uses as much as digits as its factorization.

77521565063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 77521565063 in words is "seventy-seven billion, five hundred twenty-one million, five hundred sixty-five thousand, sixty-three".