121765476419 has 2 divisors, whose sum is σ = 121765476420. Its totient is φ = 121765476418.

The previous prime is 121765476409. The next prime is 121765476541. The reversal of 121765476419 is 914674567121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121765476419 - 2⁴ = 121765476403 is a prime.

It is a super-2 number, since 2×121765476419² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121765476409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60882738209 + 60882738210.

It is an arithmetic number, because the mean of its divisors is an integer number (60882738210).

Almost surely, 2^121765476419 is an apocalyptic number.

121765476419 is a deficient number, since it is larger than the sum of its proper divisors (1).

121765476419 is an equidigital number, since it uses as much as digits as its factorization.

121765476419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The spelling of 121765476419 in words is "one hundred twenty-one billion, seven hundred sixty-five million, four hundred seventy-six thousand, four hundred nineteen".