15464463648381 has 40 divisors (see below), whose sum is σ = 25203570948864. Its totient is φ = 9371575558080.

The previous prime is 15464463648341. The next prime is 15464463648427. The reversal of 15464463648381 is 18384636446451.

15464463648381 is a `hidden beast` number, since 1 + 5 + 4 + 6 + 4 + 46 + 36 + 483 + 81 = 666.

It is not a de Polignac number, because 15464463648381 - 2⁷ = 15464463648253 is a prime.

It is a super-2 number, since 2×15464463648381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15464463648341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9418185 + ... + 10937601.

Almost surely, 2^{15464463648381} is an apocalyptic number.

15464463648381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15464463648381 is a deficient number, since it is larger than the sum of its proper divisors (9739107300483).

15464463648381 is a wasteful number, since it uses less digits than its factorization.

15464463648381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530863 (or 1530854 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 63.

The spelling of 15464463648381 in words is "fifteen trillion, four hundred sixty-four billion, four hundred sixty-three million, six hundred forty-eight thousand, three hundred eighty-one".