70281007440 has 160 divisors (see below), whose sum is σ = 250897084416. Its totient is φ = 15941552640.

The previous prime is 70281007439. The next prime is 70281007469. The reversal of 70281007440 is 4470018207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60409 + ... + 379751.

Almost surely, 2^70281007440 is an apocalyptic number.

70281007440 is a gapful number since it is divisible by the number (70) 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 70281007440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125448542208).

70281007440 is an abundant number, since it is smaller than the sum of its proper divisors (180616076976).

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

70281007440 is a wasteful number, since it uses less digits than its factorization.

70281007440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319497 (or 319491 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The spelling of 70281007440 in words is "seventy billion, two hundred eighty-one million, seven thousand, four hundred forty".