155469964551 has 16 divisors (see below), whose sum is σ = 226219696128. Its totient is φ = 94190235200.

The previous prime is 155469964537. The next prime is 155469964579.

It is a happy number.

155469964551 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 155469964551 - 2⁷ = 155469964423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155469964591) 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, 756615 + ... + 939896.

It is an arithmetic number, because the mean of its divisors is an integer number (14138731008).

Almost surely, 2^155469964551 is an apocalyptic number.

155469964551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155469964551 is a deficient number, since it is larger than the sum of its proper divisors (70749731577).

155469964551 is a wasteful number, since it uses less digits than its factorization.

155469964551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699302.

The product of its digits is 29160000, while the sum is 60.

The spelling of 155469964551 in words is "one hundred fifty-five billion, four hundred sixty-nine million, nine hundred sixty-four thousand, five hundred fifty-one".