77420453603 has 4 divisors (see below), whose sum is σ = 77443755288. Its totient is φ = 77397151920.

The previous prime is 77420453573. The next prime is 77420453611. The reversal of 77420453603 is 30635402477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30635402477 = 1019 ⋅30064183.

It is a cyclic number.

It is not a de Polignac number, because 77420453603 - 2¹² = 77420449507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77420453633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11645858 + ... + 11652503.

It is an arithmetic number, because the mean of its divisors is an integer number (19360938822).

Almost surely, 2^77420453603 is an apocalyptic number.

77420453603 is a deficient number, since it is larger than the sum of its proper divisors (23301685).

77420453603 is a wasteful number, since it uses less digits than its factorization.

77420453603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23301684.

The product of its (nonzero) digits is 423360, while the sum is 41.

The spelling of 77420453603 in words is "seventy-seven billion, four hundred twenty million, four hundred fifty-three thousand, six hundred three".