77552520451 has 6 divisors (see below), whose sum is σ = 90214156500. Its totient is φ = 66473588916.

The previous prime is 77552520433. The next prime is 77552520481. The reversal of 77552520451 is 15402525577.

It is not a de Polignac number, because 77552520451 - 2¹⁷ = 77552389379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77552520398 and 77552520407.

It is not an unprimeable number, because it can be changed into a prime (77552520481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 791352201 + ... + 791352298.

It is an arithmetic number, because the mean of its divisors is an integer number (15035692750).

Almost surely, 2^77552520451 is an apocalyptic number.

77552520451 is a deficient number, since it is larger than the sum of its proper divisors (12661636049).

77552520451 is a wasteful number, since it uses less digits than its factorization.

77552520451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582704513 (or 1582704506 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 43.

The spelling of 77552520451 in words is "seventy-seven billion, five hundred fifty-two million, five hundred twenty thousand, four hundred fifty-one".