719406439040 has 32 divisors (see below), whose sum is σ = 1719831019860. Its totient is φ = 287762575360.

The previous prime is 719406439039. The next prime is 719406439061. The reversal of 719406439040 is 40934604917.

It can be written as a sum of positive squares in 2 ways, for example, as 614994734656 + 104411704384 = 784216^2 + 323128^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×719406439040² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562035641 + ... + 562036920.

Almost surely, 2^719406439040 is an apocalyptic number.

It is an amenable number.

719406439040 is an abundant number, since it is smaller than the sum of its proper divisors (1000424580820).

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

719406439040 is a wasteful number, since it uses less digits than its factorization.

719406439040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124072580 (or 1124072568 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 719406439040 in words is "seven hundred nineteen billion, four hundred six million, four hundred thirty-nine thousand, forty".