54220440251361 has 4 divisors (see below), whose sum is σ = 72293920335152. Its totient is φ = 36146960167572.

The previous prime is 54220440251359. The next prime is 54220440251443. The reversal of 54220440251361 is 16315204402245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54220440251361 - 2¹ = 54220440251359 is a prime.

It is a super-2 number, since 2×54220440251361² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54220440255361) 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, 9036740041891 + ... + 9036740041896.

It is an arithmetic number, because the mean of its divisors is an integer number (18073480083788).

Almost surely, 2^{54220440251361} is an apocalyptic number.

It is an amenable number.

54220440251361 is a deficient number, since it is larger than the sum of its proper divisors (18073480083791).

54220440251361 is a wasteful number, since it uses less digits than its factorization.

54220440251361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18073480083790.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 54220440251361 in words is "fifty-four trillion, two hundred twenty billion, four hundred forty million, two hundred fifty-one thousand, three hundred sixty-one".