1520412143161 has 4 divisors (see below), whose sum is σ = 1520415824500. Its totient is φ = 1520408461824.

The previous prime is 1520412143137. The next prime is 1520412143167. The reversal of 1520412143161 is 1613412140251.

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 249381383161 + 1271030760000 = 499381^2 + 1127400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520412143161 - 2²³ = 1520403754553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520412143167) 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, 1129596 + ... + 2077693.

It is an arithmetic number, because the mean of its divisors is an integer number (380103956125).

Almost surely, 2^{1520412143161} is an apocalyptic number.

It is an amenable number.

1520412143161 is a deficient number, since it is larger than the sum of its proper divisors (3681339).

1520412143161 is an equidigital number, since it uses as much as digits as its factorization.

1520412143161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681338.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 1520412143161 in words is "one trillion, five hundred twenty billion, four hundred twelve million, one hundred forty-three thousand, one hundred sixty-one".