53449046181 has 16 divisors (see below), whose sum is σ = 79226123520. Its totient is φ = 35613639360.

The previous prime is 53449046141. The next prime is 53449046201. The reversal of 53449046181 is 18164094435.

53449046181 is a `hidden beast` number, since 5 + 344 + 90 + 46 + 181 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-53449046181 is a prime.

It is a super-2 number, since 2×53449046181² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53449046141) 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, 477885 + ... + 579026.

It is an arithmetic number, because the mean of its divisors is an integer number (4951632720).

Almost surely, 2^53449046181 is an apocalyptic number.

It is an amenable number.

53449046181 is a deficient number, since it is larger than the sum of its proper divisors (25777077339).

53449046181 is a wasteful number, since it uses less digits than its factorization.

53449046181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058793 (or 1058787 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 53449046181 in words is "fifty-three billion, four hundred forty-nine million, forty-six thousand, one hundred eighty-one".