29954848247981 has 8 divisors (see below), whose sum is σ = 30559485246840. Its totient is φ = 29356168264192.

The previous prime is 29954848247957. The next prime is 29954848248079. The reversal of 29954848247981 is 18974284845992.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2935280386756 + 27019567861225 = 1713266^2 + 5198035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29954848247981 - 2²² = 29954844053677 is a prime.

It is a super-2 number, since 2×29954848247981² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29954848247896 and 29954848247905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29954848247921) 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 7 ways as a sum of consecutive naturals, for example, 1489243610 + ... + 1489263723.

It is an arithmetic number, because the mean of its divisors is an integer number (3819935655855).

Almost surely, 2^{29954848247981} is an apocalyptic number.

It is an amenable number.

29954848247981 is a deficient number, since it is larger than the sum of its proper divisors (604636998859).

29954848247981 is a wasteful number, since it uses less digits than its factorization.

29954848247981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978507535.

The product of its digits is 3344302080, while the sum is 80.

The spelling of 29954848247981 in words is "twenty-nine trillion, nine hundred fifty-four billion, eight hundred forty-eight million, two hundred forty-seven thousand, nine hundred eighty-one".