16536736477 has 4 divisors (see below), whose sum is σ = 16568356000. Its totient is φ = 16505116956.

The previous prime is 16536736457. The next prime is 16536736493. The reversal of 16536736477 is 77463763561.

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: 77463763561 = 37607 ⋅2059823.

It is a cyclic number.

It is not a de Polignac number, because 16536736477 - 2¹¹ = 16536734429 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 (16536736427) 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, 15808977 + ... + 15810022.

It is an arithmetic number, because the mean of its divisors is an integer number (4142089000).

Almost surely, 2^16536736477 is an apocalyptic number.

It is an amenable number.

16536736477 is a deficient number, since it is larger than the sum of its proper divisors (31619523).

16536736477 is an equidigital number, since it uses as much as digits as its factorization.

16536736477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31619522.

The product of its digits is 13335840, while the sum is 55.

The spelling of 16536736477 in words is "sixteen billion, five hundred thirty-six million, seven hundred thirty-six thousand, four hundred seventy-seven".