670040737040 has 20 divisors (see below), whose sum is σ = 1557844713804. Its totient is φ = 268016294784.

The previous prime is 670040736977. The next prime is 670040737049. The reversal of 670040737040 is 40737040076.

It can be written as a sum of positive squares in 2 ways, for example, as 472293319696 + 197747417344 = 687236^2 + 444688^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 670040736985 and 670040737003.

It is not an unprimeable number, because it can be changed into a prime (670040737049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4187754527 + ... + 4187754686.

Almost surely, 2^670040737040 is an apocalyptic number.

It is an amenable number.

670040737040 is an abundant number, since it is smaller than the sum of its proper divisors (887803976764).

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

670040737040 is a wasteful number, since it uses less digits than its factorization.

670040737040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8375509226 (or 8375509220 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 670040737040 in words is "six hundred seventy billion, forty million, seven hundred thirty-seven thousand, forty".