154211404243252 has 6 divisors (see below), whose sum is σ = 269869957425698. Its totient is φ = 77105702121624.

The previous prime is 154211404243249. The next prime is 154211404243321. The reversal of 154211404243252 is 252342404112451.

It can be written as a sum of positive squares in only one way, i.e., 152235226196496 + 1976178046756 = 12338364^2 + 1405766^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19276425530403 + ... + 19276425530410.

Almost surely, 2^{154211404243252} is an apocalyptic number.

It is an amenable number.

154211404243252 is a deficient number, since it is larger than the sum of its proper divisors (115658553182446).

154211404243252 is a wasteful number, since it uses less digits than its factorization.

154211404243252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38552851060817 (or 38552851060815 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 154211404243252 in words is "one hundred fifty-four trillion, two hundred eleven billion, four hundred four million, two hundred forty-three thousand, two hundred fifty-two".