70825431578 has 16 divisors (see below), whose sum is σ = 115900817760. Its totient is φ = 32192084400.

The previous prime is 70825431577. The next prime is 70825431601. The reversal of 70825431578 is 87513452807.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70825431577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691973 + ... + 787703.

It is an arithmetic number, because the mean of its divisors is an integer number (7243801110).

Almost surely, 2^70825431578 is an apocalyptic number.

70825431578 is a deficient number, since it is larger than the sum of its proper divisors (45075386182).

70825431578 is a wasteful number, since it uses less digits than its factorization.

70825431578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129373.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 70825431578 in words is "seventy billion, eight hundred twenty-five million, four hundred thirty-one thousand, five hundred seventy-eight".