1670346391355 has 16 divisors (see below), whose sum is σ = 2010031576704. Its totient is φ = 1332533736960.

The previous prime is 1670346391327. The next prime is 1670346391421. The reversal of 1670346391355 is 5531936430761.

It is not a de Polignac number, because 1670346391355 - 2¹⁴ = 1670346374971 is a prime.

It is a super-2 number, since 2×1670346391355² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1670346391297 and 1670346391306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31757759 + ... + 31810311.

It is an arithmetic number, because the mean of its divisors is an integer number (125626973544).

Almost surely, 2^{1670346391355} is an apocalyptic number.

1670346391355 is a deficient number, since it is larger than the sum of its proper divisors (339685185349).

1670346391355 is a wasteful number, since it uses less digits than its factorization.

1670346391355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70246.

The product of its (nonzero) digits is 6123600, while the sum is 53.

The spelling of 1670346391355 in words is "one trillion, six hundred seventy billion, three hundred forty-six million, three hundred ninety-one thousand, three hundred fifty-five".