61400816933 has 2 divisors, whose sum is σ = 61400816934. Its totient is φ = 61400816932.

The previous prime is 61400816899. The next prime is 61400816947. The reversal of 61400816933 is 33961800416.

61400816933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31832982724 + 29567834209 = 178418^2 + 171953^2 .

It is a cyclic number.

It is not a de Polignac number, because 61400816933 - 2²⁶ = 61333708069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61400816333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700408466 + 30700408467.

It is an arithmetic number, because the mean of its divisors is an integer number (30700408467).

Almost surely, 2^61400816933 is an apocalyptic number.

It is an amenable number.

61400816933 is a deficient number, since it is larger than the sum of its proper divisors (1).

61400816933 is an equidigital number, since it uses as much as digits as its factorization.

61400816933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 61400816933 in words is "sixty-one billion, four hundred million, eight hundred sixteen thousand, nine hundred thirty-three".