154011534021 has 12 divisors (see below), whose sum is σ = 222479124972. Its totient is φ = 102666038976.

The previous prime is 154011534011. The next prime is 154011534023. The reversal of 154011534021 is 120435110451.

154011534021 is a `hidden beast` number, since 1 + 540 + 11 + 53 + 40 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 138915725796 + 15095808225 = 372714^2 + 122865^2 .

It is not a de Polignac number, because 154011534021 - 2³⁰ = 152937792197 is a prime.

It is a super-2 number, since 2×154011534021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154011534023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574746 + ... + 798971.

It is an arithmetic number, because the mean of its divisors is an integer number (18539927081).

Almost surely, 2^154011534021 is an apocalyptic number.

It is an amenable number.

154011534021 is a deficient number, since it is larger than the sum of its proper divisors (68467590951).

154011534021 is a wasteful number, since it uses less digits than its factorization.

154011534021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386180 (or 1386177 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 154011534021 its reverse (120435110451), we get a palindrome (274446644472).

The spelling of 154011534021 in words is "one hundred fifty-four billion, eleven million, five hundred thirty-four thousand, twenty-one".