71358479640 has 192 divisors, whose sum is σ = 273595944960. Its totient is φ = 15784346880.

The previous prime is 71358479627. The next prime is 71358479669. The reversal of 71358479640 is 4697485317.

71358479640 is a `hidden beast` number, since 7 + 13 + 584 + 7 + 9 + 6 + 40 = 666.

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 47 ways as a sum of consecutive naturals, for example, 378604 + ... + 534843.

It is an arithmetic number, because the mean of its divisors is an integer number (1424978880).

Almost surely, 2^71358479640 is an apocalyptic number.

71358479640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71358479640 is an abundant number, since it is smaller than the sum of its proper divisors (202237465320).

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

71358479640 is a wasteful number, since it uses less digits than its factorization.

71358479640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913502 (or 913495 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 71358479640 in words is "seventy-one billion, three hundred fifty-eight million, four hundred seventy-nine thousand, six hundred forty".