77528118451 has 12 divisors (see below), whose sum is σ = 90613203240. Its totient is φ = 66137722560.

The previous prime is 77528118443. The next prime is 77528118463. The reversal of 77528118451 is 15481182577.

It is not a de Polignac number, because 77528118451 - 2³ = 77528118443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 77528118395 and 77528118404.

It is not an unprimeable number, because it can be changed into a prime (77528158451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3738966 + ... + 3759643.

It is an arithmetic number, because the mean of its divisors is an integer number (7551100270).

Almost surely, 2^77528118451 is an apocalyptic number.

77528118451 is a deficient number, since it is larger than the sum of its proper divisors (13085084789).

77528118451 is a wasteful number, since it uses less digits than its factorization.

77528118451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498834 (or 7498827 counting only the distinct ones).

The product of its digits is 627200, while the sum is 49.

The spelling of 77528118451 in words is "seventy-seven billion, five hundred twenty-eight million, one hundred eighteen thousand, four hundred fifty-one".