70825431642 has 16 divisors (see below), whose sum is σ = 161886700992. Its totient is φ = 20235837600.

The previous prime is 70825431641. The next prime is 70825431667. The reversal of 70825431642 is 24613452807.

It is a super-2 number, since 2×70825431642² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1686319801 = 70825431642 / (7 + 0 + 8 + 2 + 5 + 4 + 3 + 1 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 70825431594 and 70825431603.

It is not an unprimeable number, because it can be changed into a prime (70825431641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843159859 + ... + 843159942.

It is an arithmetic number, because the mean of its divisors is an integer number (10117918812).

Almost surely, 2^70825431642 is an apocalyptic number.

70825431642 is an abundant number, since it is smaller than the sum of its proper divisors (91061269350).

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

70825431642 is a wasteful number, since it uses less digits than its factorization.

70825431642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686319813.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 70825431642 in words is "seventy billion, eight hundred twenty-five million, four hundred thirty-one thousand, six hundred forty-two".