89129832978551 has 4 divisors (see below), whose sum is σ = 89135874465072. Its totient is φ = 89123791492032.

The previous prime is 89129832978521. The next prime is 89129832978559. The reversal of 89129832978551 is 15587923892198.

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 89129832978551 - 2¹⁰ = 89129832977527 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 (89129832978559) 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, 3020721131 + ... + 3020750636.

It is an arithmetic number, because the mean of its divisors is an integer number (22283968616268).

Almost surely, 2^{89129832978551} is an apocalyptic number.

89129832978551 is a deficient number, since it is larger than the sum of its proper divisors (6041486521).

89129832978551 is a wasteful number, since it uses less digits than its factorization.

89129832978551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041486520.

The product of its digits is 783820800, while the sum is 77.

The spelling of 89129832978551 in words is "eighty-nine trillion, one hundred twenty-nine billion, eight hundred thirty-two million, nine hundred seventy-eight thousand, five hundred fifty-one".