1615100015161 has 4 divisors (see below), whose sum is σ = 1615138615552. Its totient is φ = 1615061414772.

The previous prime is 1615100015153. The next prime is 1615100015189.

1615100015161 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1615100015161 - 2³ = 1615100015153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1615100055161) 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, 19237365 + ... + 19321138.

It is an arithmetic number, because the mean of its divisors is an integer number (403784653888).

Almost surely, 2^{1615100015161} is an apocalyptic number.

It is an amenable number.

1615100015161 is a deficient number, since it is larger than the sum of its proper divisors (38600391).

1615100015161 is an equidigital number, since it uses as much as digits as its factorization.

1615100015161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38600390.

The product of its (nonzero) digits is 900, while the sum is 28.

It can be divided in two parts, 16151000 and 15161, that added together give a palindrome (16166161).

The spelling of 1615100015161 in words is "one trillion, six hundred fifteen billion, one hundred million, fifteen thousand, one hundred sixty-one".