154205543321612 has 48 divisors (see below), whose sum is σ = 293093637772320. Its totient is φ = 70706401984512.

The previous prime is 154205543321611. The next prime is 154205543321617. The reversal of 154205543321612 is 216123345502451.

It is a happy number.

It is a super-2 number, since 2×154205543321612² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154205543321611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63275813 + ... + 65667644.

It is an arithmetic number, because the mean of its divisors is an integer number (6106117453590).

Almost surely, 2^{154205543321612} is an apocalyptic number.

It is an amenable number.

154205543321612 is a deficient number, since it is larger than the sum of its proper divisors (138888094450708).

154205543321612 is a wasteful number, since it uses less digits than its factorization.

154205543321612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128943930 (or 128943928 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 154205543321612 in words is "one hundred fifty-four trillion, two hundred five billion, five hundred forty-three million, three hundred twenty-one thousand, six hundred twelve".