16253602541 has 4 divisors (see below), whose sum is σ = 17731202784. Its totient is φ = 14776002300.

The previous prime is 16253602531. The next prime is 16253602549. The reversal of 16253602541 is 14520635261.

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.

It is a cyclic number.

It is not a de Polignac number, because 16253602541 - 2¹⁰ = 16253601517 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 (16253602549) 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, 738800105 + ... + 738800126.

It is an arithmetic number, because the mean of its divisors is an integer number (4432800696).

Almost surely, 2^16253602541 is an apocalyptic number.

16253602541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16253602541 is a deficient number, since it is larger than the sum of its proper divisors (1477600243).

16253602541 is a wasteful number, since it uses less digits than its factorization.

16253602541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477600242.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16253602541 in words is "sixteen billion, two hundred fifty-three million, six hundred two thousand, five hundred forty-one".