161476858709 has 4 divisors (see below), whose sum is σ = 162181998060. Its totient is φ = 160771719360.

The previous prime is 161476858687. The next prime is 161476858717. The reversal of 161476858709 is 907858674161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79159510609 + 82317348100 = 281353^2 + 286910^2 .

It is a cyclic number.

It is not a de Polignac number, because 161476858709 - 2¹² = 161476854613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161476858769) 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, 352569332 + ... + 352569789.

It is an arithmetic number, because the mean of its divisors is an integer number (40545499515).

Almost surely, 2^161476858709 is an apocalyptic number.

It is an amenable number.

161476858709 is a deficient number, since it is larger than the sum of its proper divisors (705139351).

161476858709 is an equidigital number, since it uses as much as digits as its factorization.

161476858709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705139350.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 161476858709 in words is "one hundred sixty-one billion, four hundred seventy-six million, eight hundred fifty-eight thousand, seven hundred nine".