54064442981 has 4 divisors (see below), whose sum is σ = 56909940000. Its totient is φ = 51218945964.

The previous prime is 54064442977. The next prime is 54064442987. The reversal of 54064442981 is 18924446045.

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 a cyclic number.

It is not a de Polignac number, because 54064442981 - 2² = 54064442977 is a prime.

It is a super-2 number, since 2×54064442981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54064442987) 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, 1422748481 + ... + 1422748518.

It is an arithmetic number, because the mean of its divisors is an integer number (14227485000).

Almost surely, 2^54064442981 is an apocalyptic number.

It is an amenable number.

54064442981 is a deficient number, since it is larger than the sum of its proper divisors (2845497019).

54064442981 is a wasteful number, since it uses less digits than its factorization.

54064442981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845497018.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 54064442981 in words is "fifty-four billion, sixty-four million, four hundred forty-two thousand, nine hundred eighty-one".