154145321212051 has 32 divisors (see below), whose sum is σ = 178794165715200. Its totient is φ = 132413406428160.

The previous prime is 154145321212049. The next prime is 154145321212073. The reversal of 154145321212051 is 150212123541451.

It is a happy number.

It is not a de Polignac number, because 154145321212051 - 2¹ = 154145321212049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154145321212051.

It is not an unprimeable number, because it can be changed into a prime (154145321212031) 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, 19862235 + ... + 26510356.

It is an arithmetic number, because the mean of its divisors is an integer number (5587317678600).

Almost surely, 2^{154145321212051} is an apocalyptic number.

154145321212051 is a deficient number, since it is larger than the sum of its proper divisors (24648844503149).

154145321212051 is an equidigital number, since it uses as much as digits as its factorization.

154145321212051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46372736 (or 46372710 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 154145321212051 in words is "one hundred fifty-four trillion, one hundred forty-five billion, three hundred twenty-one million, two hundred twelve thousand, fifty-one".