791362621440 has 208 divisors, whose sum is σ = 2813392257600. Its totient is φ = 211029884928.

The previous prime is 791362621421. The next prime is 791362621451. The reversal of 791362621440 is 44126263197.

791362621440 is a `hidden beast` number, since 7 + 9 + 1 + 3 + 626 + 2 + 14 + 4 + 0 = 666.

It is a super-2 number, since 2×791362621440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162610 + ... + 1268529.

Almost surely, 2^791362621440 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 791362621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406696128800).

791362621440 is an abundant number, since it is smaller than the sum of its proper divisors (2022029636160).

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

791362621440 is a wasteful number, since it uses less digits than its factorization.

791362621440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431177 (or 1431149 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 791362621440 in words is "seven hundred ninety-one billion, three hundred sixty-two million, six hundred twenty-one thousand, four hundred forty".