89780731755 has 128 divisors (see below), whose sum is σ = 179985576960. Its totient is φ = 37543772160.

The previous prime is 89780731751. The next prime is 89780731759. The reversal of 89780731755 is 55713708798.

It is an interprime number because it is at equal distance from previous prime (89780731751) and next prime (89780731759).

It is not a de Polignac number, because 89780731755 - 2² = 89780731751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89780731751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5059779 + ... + 5077491.

It is an arithmetic number, because the mean of its divisors is an integer number (1406137320).

Almost surely, 2^89780731755 is an apocalyptic number.

89780731755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

89780731755 is an abundant number, since it is smaller than the sum of its proper divisors (90204845205).

89780731755 is a wasteful number, since it uses less digits than its factorization.

89780731755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17901.

The product of its (nonzero) digits is 14817600, while the sum is 60.

The spelling of 89780731755 in words is "eighty-nine billion, seven hundred eighty million, seven hundred thirty-one thousand, seven hundred fifty-five".