1215408122983 has 4 divisors (see below), whose sum is σ = 1216598533528. Its totient is φ = 1214217712440.

The previous prime is 1215408122977. The next prime is 1215408123011. The reversal of 1215408122983 is 3892218045121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215408122983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215408122923) 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, 595203741 + ... + 595205782.

It is an arithmetic number, because the mean of its divisors is an integer number (304149633382).

Almost surely, 2^{1215408122983} is an apocalyptic number.

1215408122983 is a deficient number, since it is larger than the sum of its proper divisors (1190410545).

1215408122983 is a wasteful number, since it uses less digits than its factorization.

1215408122983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190410544.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 1215408122983 in words is "one trillion, two hundred fifteen billion, four hundred eight million, one hundred twenty-two thousand, nine hundred eighty-three".