61864738510903 has 2 divisors, whose sum is σ = 61864738510904. Its totient is φ = 61864738510902.

The previous prime is 61864738510873. The next prime is 61864738510931. The reversal of 61864738510903 is 30901583746816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61864738510903 - 2⁵ = 61864738510871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61864738510973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30932369255451 + 30932369255452.

It is an arithmetic number, because the mean of its divisors is an integer number (30932369255452).

Almost surely, 2^{61864738510903} is an apocalyptic number.

61864738510903 is a deficient number, since it is larger than the sum of its proper divisors (1).

61864738510903 is an equidigital number, since it uses as much as digits as its factorization.

61864738510903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 61864738510903 in words is "sixty-one trillion, eight hundred sixty-four billion, seven hundred thirty-eight million, five hundred ten thousand, nine hundred three".