54940895861 has 2 divisors, whose sum is σ = 54940895862. Its totient is φ = 54940895860.

The previous prime is 54940895837. The next prime is 54940895921. The reversal of 54940895861 is 16859804945.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39207960100 + 15732935761 = 198010^2 + 125431^2 .

It is a cyclic number.

It is not a de Polignac number, because 54940895861 - 2⁶ = 54940895797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54940895861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54940895831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27470447930 + 27470447931.

It is an arithmetic number, because the mean of its divisors is an integer number (27470447931).

Almost surely, 2^54940895861 is an apocalyptic number.

It is an amenable number.

54940895861 is a deficient number, since it is larger than the sum of its proper divisors (1).

54940895861 is an equidigital number, since it uses as much as digits as its factorization.

54940895861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 54940895861 in words is "fifty-four billion, nine hundred forty million, eight hundred ninety-five thousand, eight hundred sixty-one".