77472191851 has 8 divisors (see below), whose sum is σ = 79577938944. Its totient is φ = 75367071360.

The previous prime is 77472191821. The next prime is 77472191879. The reversal of 77472191851 is 15819127477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77472191851 - 2¹¹ = 77472189803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77472191821) 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 7 ways as a sum of consecutive naturals, for example, 99606 + ... + 406036.

It is an arithmetic number, because the mean of its divisors is an integer number (9947242368).

Almost surely, 2^77472191851 is an apocalyptic number.

77472191851 is a deficient number, since it is larger than the sum of its proper divisors (2105747093).

77472191851 is a wasteful number, since it uses less digits than its factorization.

77472191851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313301.

The product of its digits is 987840, while the sum is 52.

The spelling of 77472191851 in words is "seventy-seven billion, four hundred seventy-two million, one hundred ninety-one thousand, eight hundred fifty-one".