15553854481 has 16 divisors (see below), whose sum is σ = 17253770688. Its totient is φ = 13901803200.

The previous prime is 15553854439. The next prime is 15553854493. The reversal of 15553854481 is 18445835551.

It is a cyclic number.

It is not a de Polignac number, because 15553854481 - 2⁹ = 15553853969 is a prime.

It is a super-2 number, since 2×15553854481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15553854181) 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, 2145595 + ... + 2152831.

It is an arithmetic number, because the mean of its divisors is an integer number (1078360668).

Almost surely, 2^15553854481 is an apocalyptic number.

15553854481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15553854481 is a deficient number, since it is larger than the sum of its proper divisors (1699916207).

15553854481 is a wasteful number, since it uses less digits than its factorization.

15553854481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512.

The product of its digits is 1920000, while the sum is 49.

The spelling of 15553854481 in words is "fifteen billion, five hundred fifty-three million, eight hundred fifty-four thousand, four hundred eighty-one".