77490875919 has 16 divisors (see below), whose sum is σ = 103471296768. Its totient is φ = 51585579072.

The previous prime is 77490875893. The next prime is 77490875929. The reversal of 77490875919 is 91957809477.

It is a happy number.

It is not a de Polignac number, because 77490875919 - 2⁸ = 77490875663 is a prime.

It is a super-2 number, since 2×77490875919² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77490875919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77490875929) 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 15 ways as a sum of consecutive naturals, for example, 6491134 + ... + 6503060.

It is an arithmetic number, because the mean of its divisors is an integer number (6466956048).

Almost surely, 2^77490875919 is an apocalyptic number.

77490875919 is a deficient number, since it is larger than the sum of its proper divisors (25980420849).

77490875919 is a wasteful number, since it uses less digits than its factorization.

77490875919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894.

The product of its (nonzero) digits is 40007520, while the sum is 66.

The spelling of 77490875919 in words is "seventy-seven billion, four hundred ninety million, eight hundred seventy-five thousand, nine hundred nineteen".