15555400154 has 12 divisors (see below), whose sum is σ = 27142586154. Its totient is φ = 6666600024.

The previous prime is 15555400151. The next prime is 15555400169. The reversal of 15555400154 is 45100455551.

15555400154 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15446761225 + 108638929 = 124285^2 + 10423^2 .

It is not an unprimeable number, because it can be changed into a prime (15555400151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79364189 + ... + 79364384.

Almost surely, 2^15555400154 is an apocalyptic number.

15555400154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15555400154 is a deficient number, since it is larger than the sum of its proper divisors (11587186000).

15555400154 is a wasteful number, since it uses less digits than its factorization.

15555400154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728589 (or 158728582 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 15555400154 in words is "fifteen billion, five hundred fifty-five million, four hundred thousand, one hundred fifty-four".