1000401522155 has 12 divisors (see below), whose sum is σ = 1396478859840. Its totient is φ = 685989615024.

The previous prime is 1000401522089. The next prime is 1000401522161. The reversal of 1000401522155 is 5512251040001.

It is not a de Polignac number, because 1000401522155 - 2¹⁰ = 1000401521131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2041635515 + ... + 2041636004.

It is an arithmetic number, because the mean of its divisors is an integer number (116373238320).

Almost surely, 2^{1000401522155} is an apocalyptic number.

1000401522155 is a deficient number, since it is larger than the sum of its proper divisors (396077337685).

1000401522155 is an equidigital number, since it uses as much as digits as its factorization.

1000401522155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083271538 (or 4083271531 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 1000401522155 its reverse (5512251040001), we get a palindrome (6512652562156).

The spelling of 1000401522155 in words is "one trillion, four hundred one million, five hundred twenty-two thousand, one hundred fifty-five".