15484806381 has 16 divisors (see below), whose sum is σ = 22526533440. Its totient is φ = 9383406720.

The previous prime is 15484806377. The next prime is 15484806401. The reversal of 15484806381 is 18360848451.

It is not a de Polignac number, because 15484806381 - 2² = 15484806377 is a prime.

It is a super-2 number, since 2×15484806381² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15484806381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15484806341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237201 + ... + 295353.

It is an arithmetic number, because the mean of its divisors is an integer number (1407908340).

Almost surely, 2^15484806381 is an apocalyptic number.

15484806381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15484806381 is a deficient number, since it is larger than the sum of its proper divisors (7041727059).

15484806381 is a wasteful number, since it uses less digits than its factorization.

15484806381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66236.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 15484806381 in words is "fifteen billion, four hundred eighty-four million, eight hundred six thousand, three hundred eighty-one".