16001551155 has 16 divisors (see below), whose sum is σ = 27108510624. Its totient is φ = 8032151040.

The previous prime is 16001551133. The next prime is 16001551193. The reversal of 16001551155 is 55115510061.

It is not a de Polignac number, because 16001551155 - 2⁸ = 16001550899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31375336 + ... + 31375845.

It is an arithmetic number, because the mean of its divisors is an integer number (1694281914).

Almost surely, 2^16001551155 is an apocalyptic number.

16001551155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16001551155 is a deficient number, since it is larger than the sum of its proper divisors (11106959469).

16001551155 is a wasteful number, since it uses less digits than its factorization.

16001551155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62751206.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 16001551155 in words is "sixteen billion, one million, five hundred fifty-one thousand, one hundred fifty-five".