69828647451 has 4 divisors (see below), whose sum is σ = 93104863272. Its totient is φ = 46552431632.

The previous prime is 69828647429. The next prime is 69828647461. The reversal of 69828647451 is 15474682896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69828647451 - 2¹³ = 69828639259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69828647461) 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, 11638107906 + ... + 11638107911.

It is an arithmetic number, because the mean of its divisors is an integer number (23276215818).

Almost surely, 2^69828647451 is an apocalyptic number.

69828647451 is a deficient number, since it is larger than the sum of its proper divisors (23276215821).

69828647451 is a wasteful number, since it uses less digits than its factorization.

69828647451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276215820.

The product of its digits is 23224320, while the sum is 60.

The spelling of 69828647451 in words is "sixty-nine billion, eight hundred twenty-eight million, six hundred forty-seven thousand, four hundred fifty-one".