89641957551 has 4 divisors (see below), whose sum is σ = 119522610072. Its totient is φ = 59761305032.

The previous prime is 89641957549. The next prime is 89641957553. The reversal of 89641957551 is 15575914698.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (89641957549) and next prime (89641957553).

It is a cyclic number.

It is not a de Polignac number, because 89641957551 - 2¹ = 89641957549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89641957553) 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, 14940326256 + ... + 14940326261.

It is an arithmetic number, because the mean of its divisors is an integer number (29880652518).

Almost surely, 2^89641957551 is an apocalyptic number.

89641957551 is a deficient number, since it is larger than the sum of its proper divisors (29880652521).

89641957551 is a wasteful number, since it uses less digits than its factorization.

89641957551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880652520.

The product of its digits is 13608000, while the sum is 60.

The spelling of 89641957551 in words is "eighty-nine billion, six hundred forty-one million, nine hundred fifty-seven thousand, five hundred fifty-one".