70708687507409 has 64 divisors (see below), whose sum is σ = 86151217152000. Its totient is φ = 56688184238400.

The previous prime is 70708687507391. The next prime is 70708687507441. The reversal of 70708687507409 is 90470578680707.

It is a cyclic number.

It is not a de Polignac number, because 70708687507409 - 2¹² = 70708687503313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70708687587409) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3432616892 + ... + 3432637490.

It is an arithmetic number, because the mean of its divisors is an integer number (1346112768000).

Almost surely, 2^{70708687507409} is an apocalyptic number.

It is an amenable number.

70708687507409 is a deficient number, since it is larger than the sum of its proper divisors (15442529644591).

70708687507409 is a wasteful number, since it uses less digits than its factorization.

70708687507409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21754.

The product of its (nonzero) digits is 165957120, while the sum is 68.

The spelling of 70708687507409 in words is "seventy trillion, seven hundred eight billion, six hundred eighty-seven million, five hundred seven thousand, four hundred nine".