155330961407 has 4 divisors (see below), whose sum is σ = 155351866320. Its totient is φ = 155310056496.

The previous prime is 155330961391. The next prime is 155330961433. The reversal of 155330961407 is 704169033551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155330961407 - 2⁴ = 155330961391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155330964407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10441307 + ... + 10456172.

It is an arithmetic number, because the mean of its divisors is an integer number (38837966580).

Almost surely, 2^155330961407 is an apocalyptic number.

155330961407 is a deficient number, since it is larger than the sum of its proper divisors (20904913).

155330961407 is an equidigital number, since it uses as much as digits as its factorization.

155330961407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20904912.

The product of its (nonzero) digits is 340200, while the sum is 44.

Adding to 155330961407 its reverse (704169033551), we get a palindrome (859499994958).

The spelling of 155330961407 in words is "one hundred fifty-five billion, three hundred thirty million, nine hundred sixty-one thousand, four hundred seven".