9949954017381 has 48 divisors (see below), whose sum is σ = 15516717861888. Its totient is φ = 5654703331200.

The previous prime is 9949954017359. The next prime is 9949954017389. The reversal of 9949954017381 is 1837104599499.

It is not a de Polignac number, because 9949954017381 - 2¹¹ = 9949954015333 is a prime.

It is a super-2 number, since 2×9949954017381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949954017389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139591291 + ... + 139662551.

It is an arithmetic number, because the mean of its divisors is an integer number (323264955456).

Almost surely, 2^{9949954017381} is an apocalyptic number.

It is an amenable number.

9949954017381 is a deficient number, since it is larger than the sum of its proper divisors (5566763844507).

9949954017381 is a wasteful number, since it uses less digits than its factorization.

9949954017381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76442 (or 76435 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 69.

The spelling of 9949954017381 in words is "nine trillion, nine hundred forty-nine billion, nine hundred fifty-four million, seventeen thousand, three hundred eighty-one".