315516425121332 has 6 divisors (see below), whose sum is σ = 552153743962338. Its totient is φ = 157758212560664.

The previous prime is 315516425121329. The next prime is 315516425121341. The reversal of 315516425121332 is 233121524615513.

It can be written as a sum of positive squares in only one way, i.e., 310682785430416 + 4833639690916 = 17626196^2 + 2198554^2 .

It is a super-2 number, since 2×315516425121332² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39439553140163 + ... + 39439553140170.

It is an arithmetic number, because the mean of its divisors is an integer number (92025623993723).

Almost surely, 2^{315516425121332} is an apocalyptic number.

It is an amenable number.

315516425121332 is a deficient number, since it is larger than the sum of its proper divisors (236637318841006).

315516425121332 is a wasteful number, since it uses less digits than its factorization.

315516425121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78879106280337 (or 78879106280335 counting only the distinct ones).

The product of its digits is 648000, while the sum is 44.

Adding to 315516425121332 its reverse (233121524615513), we get a palindrome (548637949736845).

The spelling of 315516425121332 in words is "three hundred fifteen trillion, five hundred sixteen billion, four hundred twenty-five million, one hundred twenty-one thousand, three hundred thirty-two".