1215414312929 has 2 divisors, whose sum is σ = 1215414312930. Its totient is φ = 1215414312928.

The previous prime is 1215414312899. The next prime is 1215414312971. The reversal of 1215414312929 is 9292134145121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113126282304 + 102288030625 = 1055048^2 + 319825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215414312929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1215414312929.

It is not a weakly prime, because it can be changed into another prime (1215414312829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607707156464 + 607707156465.

It is an arithmetic number, because the mean of its divisors is an integer number (607707156465).

Almost surely, 2^{1215414312929} is an apocalyptic number.

It is an amenable number.

1215414312929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215414312929 is an equidigital number, since it uses as much as digits as its factorization.

1215414312929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The spelling of 1215414312929 in words is "one trillion, two hundred fifteen billion, four hundred fourteen million, three hundred twelve thousand, nine hundred twenty-nine".