61486537867 has 2 divisors, whose sum is σ = 61486537868. Its totient is φ = 61486537866.

The previous prime is 61486537817. The next prime is 61486537927. The reversal of 61486537867 is 76873568416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61486537867 - 2¹⁵ = 61486505099 is a prime.

It is not a weakly prime, because it can be changed into another prime (61486537807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30743268933 + 30743268934.

It is an arithmetic number, because the mean of its divisors is an integer number (30743268934).

Almost surely, 2^61486537867 is an apocalyptic number.

61486537867 is a deficient number, since it is larger than the sum of its proper divisors (1).

61486537867 is an equidigital number, since it uses as much as digits as its factorization.

61486537867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The spelling of 61486537867 in words is "sixty-one billion, four hundred eighty-six million, five hundred thirty-seven thousand, eight hundred sixty-seven".