84337552991 has 4 divisors (see below), whose sum is σ = 84896079984. Its totient is φ = 83779026000.

The previous prime is 84337552969. The next prime is 84337553011. The reversal of 84337552991 is 19925573348.

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 84337552991 - 2⁶ = 84337552927 is a prime.

It is a super-2 number, since 2×84337552991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84337552961) 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, 279263270 + ... + 279263571.

It is an arithmetic number, because the mean of its divisors is an integer number (21224019996).

Almost surely, 2^84337552991 is an apocalyptic number.

84337552991 is a deficient number, since it is larger than the sum of its proper divisors (558526993).

84337552991 is a wasteful number, since it uses less digits than its factorization.

84337552991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558526992.

The product of its digits is 8164800, while the sum is 56.

The spelling of 84337552991 in words is "eighty-four billion, three hundred thirty-seven million, five hundred fifty-two thousand, nine hundred ninety-one".