77454842054 has 4 divisors (see below), whose sum is σ = 116182263084. Its totient is φ = 38727421026.

The previous prime is 77454842011. The next prime is 77454842117. The reversal of 77454842054 is 45024845477.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45024845477 = 1279 ⋅35203163.

It is a super-2 number, since 2×77454842054² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77454841993 and 77454842011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19363710512 + ... + 19363710515.

It is an arithmetic number, because the mean of its divisors is an integer number (29045565771).

Almost surely, 2^77454842054 is an apocalyptic number.

77454842054 is a deficient number, since it is larger than the sum of its proper divisors (38727421030).

77454842054 is a wasteful number, since it uses less digits than its factorization.

77454842054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38727421029.

The product of its (nonzero) digits is 5017600, while the sum is 50.

The spelling of 77454842054 in words is "seventy-seven billion, four hundred fifty-four million, eight hundred forty-two thousand, fifty-four".