15545451154 has 8 divisors (see below), whose sum is σ = 23344647228. Its totient is φ = 7763902080.

The previous prime is 15545451149. The next prime is 15545451167. The reversal of 15545451154 is 45115454551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15330154225 + 215296929 = 123815^2 + 14673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×15545451154² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4409547 + ... + 4413070.

Almost surely, 2^15545451154 is an apocalyptic number.

15545451154 is a deficient number, since it is larger than the sum of its proper divisors (7799196074).

15545451154 is an equidigital number, since it uses as much as digits as its factorization.

15545451154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823500.

The product of its digits is 200000, while the sum is 40.

The spelling of 15545451154 in words is "fifteen billion, five hundred forty-five million, four hundred fifty-one thousand, one hundred fifty-four".