121602463663 has 4 divisors (see below), whose sum is σ = 121892684760. Its totient is φ = 121312242568.

The previous prime is 121602463657. The next prime is 121602463669. The reversal of 121602463663 is 366364206121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366364206121 = 23 ⋅15928878527.

It is an interprime number because it is at equal distance from previous prime (121602463657) and next prime (121602463669).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121602463663 is a prime.

It is a super-2 number, since 2×121602463663² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121602463669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145109920 + ... + 145110757.

It is an arithmetic number, because the mean of its divisors is an integer number (30473171190).

Almost surely, 2^121602463663 is an apocalyptic number.

121602463663 is a deficient number, since it is larger than the sum of its proper divisors (290221097).

121602463663 is an equidigital number, since it uses as much as digits as its factorization.

121602463663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290221096.

The product of its (nonzero) digits is 186624, while the sum is 40.

Adding to 121602463663 its reverse (366364206121), we get a palindrome (487966669784).

The spelling of 121602463663 in words is "one hundred twenty-one billion, six hundred two million, four hundred sixty-three thousand, six hundred sixty-three".