61275138383 has 2 divisors, whose sum is σ = 61275138384. Its totient is φ = 61275138382.

The previous prime is 61275138359. The next prime is 61275138427. The reversal of 61275138383 is 38383157216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61275138383 - 2²⁴ = 61258361167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61275138313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30637569191 + 30637569192.

It is an arithmetic number, because the mean of its divisors is an integer number (30637569192).

Almost surely, 2^61275138383 is an apocalyptic number.

61275138383 is a deficient number, since it is larger than the sum of its proper divisors (1).

61275138383 is an equidigital number, since it uses as much as digits as its factorization.

61275138383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The spelling of 61275138383 in words is "sixty-one billion, two hundred seventy-five million, one hundred thirty-eight thousand, three hundred eighty-three".