61401265463 has 2 divisors, whose sum is σ = 61401265464. Its totient is φ = 61401265462.

The previous prime is 61401265433. The next prime is 61401265487. The reversal of 61401265463 is 36456210416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61401265463 - 2¹⁶ = 61401199927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61401265433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700632731 + 30700632732.

It is an arithmetic number, because the mean of its divisors is an integer number (30700632732).

Almost surely, 2^61401265463 is an apocalyptic number.

61401265463 is a deficient number, since it is larger than the sum of its proper divisors (1).

61401265463 is an equidigital number, since it uses as much as digits as its factorization.

61401265463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 61401265463 its reverse (36456210416), we get a palindrome (97857475879).

The spelling of 61401265463 in words is "sixty-one billion, four hundred one million, two hundred sixty-five thousand, four hundred sixty-three".