234364505991 has 16 divisors (see below), whose sum is σ = 389592945408. Its totient is φ = 121747795200.

The previous prime is 234364505989. The next prime is 234364506041. The reversal of 234364505991 is 199505463432.

It is not a de Polignac number, because 234364505991 - 2¹ = 234364505989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234364505911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507282250 + ... + 507282711.

It is an arithmetic number, because the mean of its divisors is an integer number (24349559088).

Almost surely, 2^234364505991 is an apocalyptic number.

234364505991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

234364505991 is a deficient number, since it is larger than the sum of its proper divisors (155228439417).

234364505991 is a wasteful number, since it uses less digits than its factorization.

234364505991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014564982.

The product of its (nonzero) digits is 3499200, while the sum is 51.

The spelling of 234364505991 in words is "two hundred thirty-four billion, three hundred sixty-four million, five hundred five thousand, nine hundred ninety-one".