89784351551 has 2 divisors, whose sum is σ = 89784351552. Its totient is φ = 89784351550.

The previous prime is 89784351533. The next prime is 89784351623. The reversal of 89784351551 is 15515348798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89784351551 - 2²⁶ = 89717242687 is a prime.

It is a super-2 number, since 2×89784351551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89784351751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44892175775 + 44892175776.

It is an arithmetic number, because the mean of its divisors is an integer number (44892175776).

Almost surely, 2^89784351551 is an apocalyptic number.

89784351551 is a deficient number, since it is larger than the sum of its proper divisors (1).

89784351551 is an equidigital number, since it uses as much as digits as its factorization.

89784351551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048000, while the sum is 56.

The spelling of 89784351551 in words is "eighty-nine billion, seven hundred eighty-four million, three hundred fifty-one thousand, five hundred fifty-one".