77653163378 has 16 divisors (see below), whose sum is σ = 135631402560. Its totient is φ = 32652003696.

The previous prime is 77653163359. The next prime is 77653163383. The reversal of 77653163378 is 87336135677.

It is a super-2 number, since 2×77653163378² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 52326188 + ... + 52327671.

It is an arithmetic number, because the mean of its divisors is an integer number (8476962660).

Almost surely, 2^77653163378 is an apocalyptic number.

77653163378 is a deficient number, since it is larger than the sum of its proper divisors (57978239182).

77653163378 is a wasteful number, since it uses less digits than its factorization.

77653163378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104653921.

The product of its digits is 13335840, while the sum is 56.

The spelling of 77653163378 in words is "seventy-seven billion, six hundred fifty-three million, one hundred sixty-three thousand, three hundred seventy-eight".