77898236133 has 8 divisors (see below), whose sum is σ = 105624727200. Its totient is φ = 51051951248.

The previous prime is 77898236131. The next prime is 77898236197. The reversal of 77898236133 is 33163289877.

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 77898236133 - 2¹ = 77898236131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77898236131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220051338 + ... + 220051691.

It is an arithmetic number, because the mean of its divisors is an integer number (13203090900).

Almost surely, 2^77898236133 is an apocalyptic number.

It is an amenable number.

77898236133 is a deficient number, since it is larger than the sum of its proper divisors (27726491067).

77898236133 is a wasteful number, since it uses less digits than its factorization.

77898236133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440103091.

The product of its digits is 9144576, while the sum is 57.

The spelling of 77898236133 in words is "seventy-seven billion, eight hundred ninety-eight million, two hundred thirty-six thousand, one hundred thirty-three".