155404053222201 has 72 divisors (see below), whose sum is σ = 262151985199104. Its totient is φ = 88451769692160.

The previous prime is 155404053222181. The next prime is 155404053222221. The reversal of 155404053222201 is 102222350404551.

155404053222201 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 0 + 405 + 3 + 22 + 220 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (155404053222181) and next prime (155404053222221).

It is not a de Polignac number, because 155404053222201 - 2⁶ = 155404053222137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155404053222221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3071747416 + ... + 3071798006.

It is an arithmetic number, because the mean of its divisors is an integer number (3640999794432).

Almost surely, 2^{155404053222201} is an apocalyptic number.

It is an amenable number.

155404053222201 is a deficient number, since it is larger than the sum of its proper divisors (106747931976903).

155404053222201 is a wasteful number, since it uses less digits than its factorization.

155404053222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77971 (or 77961 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 155404053222201 in words is "one hundred fifty-five trillion, four hundred four billion, fifty-three million, two hundred twenty-two thousand, two hundred one".