70825431640 has 32 divisors (see below), whose sum is σ = 159371722080. Its totient is φ = 28327594752.

The previous prime is 70825431601. The next prime is 70825431641. The reversal of 70825431640 is 4613452807.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 70825431593 and 70825431602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70825431641) 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, 399892 + ... + 549148.

It is an arithmetic number, because the mean of its divisors is an integer number (4980366315).

Almost surely, 2^70825431640 is an apocalyptic number.

It is an amenable number.

70825431640 is an abundant number, since it is smaller than the sum of its proper divisors (88546290440).

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

70825431640 is a wasteful number, since it uses less digits than its factorization.

70825431640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161131 (or 161127 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 70825431640 in words is "seventy billion, eight hundred twenty-five million, four hundred thirty-one thousand, six hundred forty".