16477532693 has 4 divisors (see below), whose sum is σ = 17446799340. Its totient is φ = 15508266048.

The previous prime is 16477532653. The next prime is 16477532699. The reversal of 16477532693 is 39623577461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39623577461 = 13 ⋅3047967497.

It can be written as a sum of positive squares in 2 ways, for example, as 5297219524 + 11180313169 = 72782^2 + 105737^2 .

It is not a de Polignac number, because 16477532693 - 2¹² = 16477528597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16477532699) 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, 484633298 + ... + 484633331.

It is an arithmetic number, because the mean of its divisors is an integer number (4361699835).

Almost surely, 2^16477532693 is an apocalyptic number.

It is an amenable number.

16477532693 is a deficient number, since it is larger than the sum of its proper divisors (969266647).

16477532693 is an equidigital number, since it uses as much as digits as its factorization.

16477532693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969266646.

The product of its digits is 5715360, while the sum is 53.

The spelling of 16477532693 in words is "sixteen billion, four hundred seventy-seven million, five hundred thirty-two thousand, six hundred ninety-three".