799458139520 has 128 divisors (see below), whose sum is σ = 1949886859680. Its totient is φ = 313327206400.

The previous prime is 799458139517. The next prime is 799458139523. The reversal of 799458139520 is 25931854997.

It is an interprime number because it is at equal distance from previous prime (799458139517) and next prime (799458139523).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799458139523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25797635 + ... + 25828605.

Almost surely, 2^799458139520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799458139520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974943429840).

799458139520 is an abundant number, since it is smaller than the sum of its proper divisors (1150428720160).

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

799458139520 is a wasteful number, since it uses less digits than its factorization.

799458139520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31804 (or 31792 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 62.

The spelling of 799458139520 in words is "seven hundred ninety-nine billion, four hundred fifty-eight million, one hundred thirty-nine thousand, five hundred twenty".