1338463558971 has 192 divisors, whose sum is σ = 2499304743936. Its totient is φ = 670054809600.

The previous prime is 1338463558967. The next prime is 1338463558997. The reversal of 1338463558971 is 1798553648331.

1338463558971 is a `hidden beast` number, since 1 + 3 + 3 + 8 + 4 + 6 + 3 + 558 + 9 + 71 = 666.

It is not a de Polignac number, because 1338463558971 - 2² = 1338463558967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 1338463558899 and 1338463558908.

It is not an unprimeable number, because it can be changed into a prime (1338463558921) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1519254451 + ... + 1519255331.

It is an arithmetic number, because the mean of its divisors is an integer number (13017212208).

Almost surely, 2^{1338463558971} is an apocalyptic number.

1338463558971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1338463558971 is a deficient number, since it is larger than the sum of its proper divisors (1160841184965).

1338463558971 is a wasteful number, since it uses less digits than its factorization.

1338463558971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442 (or 1439 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 1338463558971 in words is "one trillion, three hundred thirty-eight billion, four hundred sixty-three million, five hundred fifty-eight thousand, nine hundred seventy-one".