15454421155 has 8 divisors (see below), whose sum is σ = 18560476512. Its totient is φ = 12353422848.

The previous prime is 15454421123. The next prime is 15454421197. The reversal of 15454421155 is 55112445451.

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

It is a cyclic number.

It is not a de Polignac number, because 15454421155 - 2⁵ = 15454421123 is a prime.

It is a super-2 number, since 2×15454421155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257534 + ... + 1269763.

It is an arithmetic number, because the mean of its divisors is an integer number (2320059564).

Almost surely, 2^15454421155 is an apocalyptic number.

15454421155 is a deficient number, since it is larger than the sum of its proper divisors (3106055357).

15454421155 is a wasteful number, since it uses less digits than its factorization.

15454421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528525.

The product of its digits is 80000, while the sum is 37.

The spelling of 15454421155 in words is "fifteen billion, four hundred fifty-four million, four hundred twenty-one thousand, one hundred fifty-five".