155121042634233 has 64 divisors (see below), whose sum is σ = 224228052728064. Its totient is φ = 94822930944000.

The previous prime is 155121042634223. The next prime is 155121042634249. The reversal of 155121042634233 is 332436240121551.

It is not a de Polignac number, because 155121042634233 - 2¹² = 155121042630137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155121042634213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6583793773 + ... + 6583817333.

It is an arithmetic number, because the mean of its divisors is an integer number (3503563323876).

Almost surely, 2^{155121042634233} is an apocalyptic number.

155121042634233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155121042634233 is a deficient number, since it is larger than the sum of its proper divisors (69107010093831).

155121042634233 is a wasteful number, since it uses less digits than its factorization.

155121042634233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25706.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 155121042634233 its reverse (332436240121551), we get a palindrome (487557282755784).

The spelling of 155121042634233 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, forty-two million, six hundred thirty-four thousand, two hundred thirty-three".