70205407440 has 160 divisors (see below), whose sum is σ = 252943810560. Its totient is φ = 15774945792.

The previous prime is 70205407409. The next prime is 70205407457. The reversal of 70205407440 is 4470450207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255024 + ... + 453263.

It is an arithmetic number, because the mean of its divisors is an integer number (1580898816).

Almost surely, 2^70205407440 is an apocalyptic number.

70205407440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70205407440 is an abundant number, since it is smaller than the sum of its proper divisors (182738403120).

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

70205407440 is a wasteful number, since it uses less digits than its factorization.

70205407440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708369 (or 708363 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

Adding to 70205407440 its reverse (4470450207), we get a palindrome (74675857647).

The spelling of 70205407440 in words is "seventy billion, two hundred five million, four hundred seven thousand, four hundred forty".