77901872826 has 16 divisors (see below), whose sum is σ = 155827535328. Its totient is φ = 25963326000.

The previous prime is 77901872813. The next prime is 77901872897. The reversal of 77901872826 is 62827810977.

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 7 ways as a sum of consecutive naturals, for example, 948525 + ... + 1027376.

It is an arithmetic number, because the mean of its divisors is an integer number (9739220958).

Almost surely, 2^77901872826 is an apocalyptic number.

77901872826 is an abundant number, since it is smaller than the sum of its proper divisors (77925662502).

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

77901872826 is a wasteful number, since it uses less digits than its factorization.

77901872826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982477.

The product of its (nonzero) digits is 4741632, while the sum is 57.

The spelling of 77901872826 in words is "seventy-seven billion, nine hundred one million, eight hundred seventy-two thousand, eight hundred twenty-six".