155151221552313 has 32 divisors (see below), whose sum is σ = 236575173067776. Its totient is φ = 88600007901888.

The previous prime is 155151221552303. The next prime is 155151221552333. The reversal of 155151221552313 is 313255122151551.

It is not a de Polignac number, because 155151221552313 - 2⁵ = 155151221552281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155151221552303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234546970 + ... + 235207532.

It is an arithmetic number, because the mean of its divisors is an integer number (7392974158368).

Almost surely, 2^{155151221552313} is an apocalyptic number.

It is an amenable number.

155151221552313 is a deficient number, since it is larger than the sum of its proper divisors (81423951515463).

155151221552313 is a wasteful number, since it uses less digits than its factorization.

155151221552313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667853.

The product of its digits is 225000, while the sum is 42.

The spelling of 155151221552313 in words is "one hundred fifty-five trillion, one hundred fifty-one billion, two hundred twenty-one million, five hundred fifty-two thousand, three hundred thirteen".