55413999973 has 2 divisors, whose sum is σ = 55413999974. Its totient is φ = 55413999972.

The previous prime is 55413999967. The next prime is 55414000039. The reversal of 55413999973 is 37999931455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55355737284 + 58262689 = 235278^2 + 7633^2 .

It is a cyclic number.

It is not a de Polignac number, because 55413999973 - 2⁵ = 55413999941 is a prime.

It is a super-2 number, since 2×55413999973² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55413999673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27706999986 + 27706999987.

It is an arithmetic number, because the mean of its divisors is an integer number (27706999987).

Almost surely, 2^55413999973 is an apocalyptic number.

It is an amenable number.

55413999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

55413999973 is an equidigital number, since it uses as much as digits as its factorization.

55413999973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41334300, while the sum is 64.

The spelling of 55413999973 in words is "fifty-five billion, four hundred thirteen million, nine hundred ninety-nine thousand, nine hundred seventy-three".