161914885487 has 8 divisors (see below), whose sum is σ = 164670414480. Its totient is φ = 159159730240.

The previous prime is 161914885469. The next prime is 161914885547. The reversal of 161914885487 is 784588419161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161914885487 - 2²⁰ = 161913836911 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 (161914882487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862937 + ... + 1033677.

It is an arithmetic number, because the mean of its divisors is an integer number (20583801810).

Almost surely, 2^161914885487 is an apocalyptic number.

161914885487 is a deficient number, since it is larger than the sum of its proper divisors (2755528993).

161914885487 is a wasteful number, since it uses less digits than its factorization.

161914885487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186873.

The product of its digits is 15482880, while the sum is 62.

It can be divided in two parts, 161914 and 885487, that added together give a palindrome (1047401).

The spelling of 161914885487 in words is "one hundred sixty-one billion, nine hundred fourteen million, eight hundred eighty-five thousand, four hundred eighty-seven".