365987532161 has 4 divisors (see below), whose sum is σ = 365997408000. Its totient is φ = 365977656324.

The previous prime is 365987532121. The next prime is 365987532173. The reversal of 365987532161 is 161235789563.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161235789563 = 7207 ⋅22372109.

It is a cyclic number.

It is not a de Polignac number, because 365987532161 - 2²² = 365983337857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 365987532097 and 365987532106.

It is not an unprimeable number, because it can be changed into a prime (365987532121) 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, 4882121 + ... + 4956518.

It is an arithmetic number, because the mean of its divisors is an integer number (91499352000).

Almost surely, 2^365987532161 is an apocalyptic number.

It is an amenable number.

365987532161 is a deficient number, since it is larger than the sum of its proper divisors (9875839).

365987532161 is an equidigital number, since it uses as much as digits as its factorization.

365987532161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875838.

The product of its digits is 8164800, while the sum is 56.

The spelling of 365987532161 in words is "three hundred sixty-five billion, nine hundred eighty-seven million, five hundred thirty-two thousand, one hundred sixty-one".