361421506499 has 2 divisors, whose sum is σ = 361421506500. Its totient is φ = 361421506498.

The previous prime is 361421506487. The next prime is 361421506519. The reversal of 361421506499 is 994605124163.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361421506499 is a prime.

It is not a weakly prime, because it can be changed into another prime (361421506409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180710753249 + 180710753250.

It is an arithmetic number, because the mean of its divisors is an integer number (180710753250).

Almost surely, 2^361421506499 is an apocalyptic number.

361421506499 is a deficient number, since it is larger than the sum of its proper divisors (1).

361421506499 is an equidigital number, since it uses as much as digits as its factorization.

361421506499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 361421506499 in words is "three hundred sixty-one billion, four hundred twenty-one million, five hundred six thousand, four hundred ninety-nine".