77275001563 has 4 divisors (see below), whose sum is σ = 77497696440. Its totient is φ = 77052306688.

The previous prime is 77275001561. The next prime is 77275001567. The reversal of 77275001563 is 36510057277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36510057277 = 4639 ⋅7870243.

It is a cyclic number.

It is not a de Polignac number, because 77275001563 - 2¹ = 77275001561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77275001561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111346918 + ... + 111347611.

It is an arithmetic number, because the mean of its divisors is an integer number (19374424110).

Almost surely, 2^77275001563 is an apocalyptic number.

77275001563 is a deficient number, since it is larger than the sum of its proper divisors (222694877).

77275001563 is a wasteful number, since it uses less digits than its factorization.

77275001563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222694876.

The product of its (nonzero) digits is 308700, while the sum is 43.

The spelling of 77275001563 in words is "seventy-seven billion, two hundred seventy-five million, one thousand, five hundred sixty-three".