78554492941 has 2 divisors, whose sum is σ = 78554492942. Its totient is φ = 78554492940.

The previous prime is 78554492927. The next prime is 78554492969. The reversal of 78554492941 is 14929445587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78554075625 + 417316 = 280275^2 + 646^2 .

It is a cyclic number.

It is not a de Polignac number, because 78554492941 - 2⁵ = 78554492909 is a prime.

It is a super-2 number, since 2×78554492941² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78554492921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39277246470 + 39277246471.

It is an arithmetic number, because the mean of its divisors is an integer number (39277246471).

Almost surely, 2^78554492941 is an apocalyptic number.

It is an amenable number.

78554492941 is a deficient number, since it is larger than the sum of its proper divisors (1).

78554492941 is an equidigital number, since it uses as much as digits as its factorization.

78554492941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 58.

The spelling of 78554492941 in words is "seventy-eight billion, five hundred fifty-four million, four hundred ninety-two thousand, nine hundred forty-one".