15054743381 has 4 divisors (see below), whose sum is σ = 15061777164. Its totient is φ = 15047709600.

The previous prime is 15054743377. The next prime is 15054743399. The reversal of 15054743381 is 18334745051.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6268680625 + 8786062756 = 79175^2 + 93734^2 .

It is a cyclic number.

It is not a de Polignac number, because 15054743381 - 2² = 15054743377 is a prime.

It is a super-2 number, since 2×15054743381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15054743981) 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, 3513680 + ... + 3517961.

It is an arithmetic number, because the mean of its divisors is an integer number (3765444291).

Almost surely, 2^15054743381 is an apocalyptic number.

It is an amenable number.

15054743381 is a deficient number, since it is larger than the sum of its proper divisors (7033783).

15054743381 is an equidigital number, since it uses as much as digits as its factorization.

15054743381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033782.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 15054743381 in words is "fifteen billion, fifty-four million, seven hundred forty-three thousand, three hundred eighty-one".