154200551655021 has 32 divisors (see below), whose sum is σ = 220093008384000. Its totient is φ = 95737835651328.

The previous prime is 154200551654999. The next prime is 154200551655067. The reversal of 154200551655021 is 120556155002451.

It is a happy number.

154200551655021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154200551655021 - 2⁹ = 154200551654509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154200551655091) 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, 283292901 + ... + 283836693.

It is an arithmetic number, because the mean of its divisors is an integer number (6877906512000).

Almost surely, 2^{154200551655021} is an apocalyptic number.

It is an amenable number.

154200551655021 is a deficient number, since it is larger than the sum of its proper divisors (65892456728979).

154200551655021 is a wasteful number, since it uses less digits than its factorization.

154200551655021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628193.

The product of its (nonzero) digits is 300000, while the sum is 42.

The spelling of 154200551655021 in words is "one hundred fifty-four trillion, two hundred billion, five hundred fifty-one million, six hundred fifty-five thousand, twenty-one".