1615454545161 has 32 divisors (see below), whose sum is σ = 2254411709568. Its totient is φ = 1027854696960.

The previous prime is 1615454545127. The next prime is 1615454545231.

1615454545161 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1615454545161 - 2¹¹ = 1615454543113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1615454545161.

It is not an unprimeable number, because it can be changed into a prime (1615454545261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27567885 + ... + 27626421.

It is an arithmetic number, because the mean of its divisors is an integer number (70450365924).

Almost surely, 2^{1615454545161} is an apocalyptic number.

It is an amenable number.

1615454545161 is a deficient number, since it is larger than the sum of its proper divisors (638957164407).

1615454545161 is a wasteful number, since it uses less digits than its factorization.

1615454545161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63321.

The product of its digits is 1440000, while the sum is 48.

The spelling of 1615454545161 in words is "one trillion, six hundred fifteen billion, four hundred fifty-four million, five hundred forty-five thousand, one hundred sixty-one".