77454842053 has 4 divisors (see below), whose sum is σ = 77515402240. Its totient is φ = 77394281868.

The previous prime is 77454842011. The next prime is 77454842117. The reversal of 77454842053 is 35024845477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77454842053 - 2¹³ = 77454833861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77454841988 and 77454842006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77454842653) 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, 30278175 + ... + 30280732.

It is an arithmetic number, because the mean of its divisors is an integer number (19378850560).

Almost surely, 2^77454842053 is an apocalyptic number.

It is an amenable number.

77454842053 is a deficient number, since it is larger than the sum of its proper divisors (60560187).

77454842053 is a wasteful number, since it uses less digits than its factorization.

77454842053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60560186.

The product of its (nonzero) digits is 3763200, while the sum is 49.

The spelling of 77454842053 in words is "seventy-seven billion, four hundred fifty-four million, eight hundred forty-two thousand, fifty-three".