77460159378 has 32 divisors (see below), whose sum is σ = 178075230336. Its totient is φ = 22003544448.

The previous prime is 77460159353. The next prime is 77460159407. The reversal of 77460159378 is 87395106477.

It is a happy number.

It is a super-2 number, since 2×77460159378² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 5323051 + ... + 5337582.

It is an arithmetic number, because the mean of its divisors is an integer number (5564850948).

Almost surely, 2^77460159378 is an apocalyptic number.

77460159378 is an abundant number, since it is smaller than the sum of its proper divisors (100615070958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77460159378 is a wasteful number, since it uses less digits than its factorization.

77460159378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660818.

The product of its (nonzero) digits is 8890560, while the sum is 57.

The spelling of 77460159378 in words is "seventy-seven billion, four hundred sixty million, one hundred fifty-nine thousand, three hundred seventy-eight".