99982069551 has 72 divisors (see below), whose sum is σ = 186578879760. Its totient is φ = 52737676992.

The previous prime is 99982069493. The next prime is 99982069597. The reversal of 99982069551 is 15596028999.

99982069551 is a nontrivial binomial coefficient, being equal to C(447174, 2).

It is not a de Polignac number, because 99982069551 - 2⁹ = 99982069039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99982069151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1 + ... + 447173.

It is an arithmetic number, because the mean of its divisors is an integer number (2591373330).

Almost surely, 2^99982069551 is an apocalyptic number.

99982069551 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99982069551 is the 447173-rd triangular number and also the 223587-th hexagonal number.

99982069551 is a deficient number, since it is larger than the sum of its proper divisors (86596810209).

99982069551 is a wasteful number, since it uses less digits than its factorization.

99982069551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447222 (or 447196 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 63.

The spelling of 99982069551 in words is "ninety-nine billion, nine hundred eighty-two million, sixty-nine thousand, five hundred fifty-one".