791137536550 has 48 divisors (see below), whose sum is σ = 1559295912960. Its totient is φ = 297606735360.

The previous prime is 791137536517. The next prime is 791137536583. The reversal of 791137536550 is 55635731197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (791137536517) and next prime (791137536583).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 723292 + ... + 1451008.

It is an arithmetic number, because the mean of its divisors is an integer number (32485331520).

Almost surely, 2^791137536550 is an apocalyptic number.

791137536550 is a deficient number, since it is larger than the sum of its proper divisors (768158376410).

791137536550 is a wasteful number, since it uses less digits than its factorization.

791137536550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729025 (or 729020 counting only the distinct ones).

The product of its (nonzero) digits is 2976750, while the sum is 52.

The spelling of 791137536550 in words is "seven hundred ninety-one billion, one hundred thirty-seven million, five hundred thirty-six thousand, five hundred fifty".