731391380496 has 1440 divisors, whose sum is σ = 2753050460160. Its totient is φ = 186659085312.

The previous prime is 731391380407. The next prime is 731391380501. The reversal of 731391380496 is 694083193137.

It is a happy number.

731391380496 is a `hidden beast` number, since 7 + 3 + 13 + 9 + 138 + 0 + 496 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 5758987185 + ... + 5758987311.

Almost surely, 2^731391380496 is an apocalyptic number.

731391380496 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731391380496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376525230080).

731391380496 is an abundant number, since it is smaller than the sum of its proper divisors (2021659079664).

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

731391380496 is a wasteful number, since it uses less digits than its factorization.

731391380496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 731391380496 in words is "seven hundred thirty-one billion, three hundred ninety-one million, three hundred eighty thousand, four hundred ninety-six".