154134021561451 has 8 divisors (see below), whose sum is σ = 156086651635200. Its totient is φ = 152181430650600.

The previous prime is 154134021561449. The next prime is 154134021561467. The reversal of 154134021561451 is 154165120431451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154134021561451 - 2¹ = 154134021561449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154134021561398 and 154134021561407.

It is not an unprimeable number, because it can be changed into a prime (154134021568451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828681 + ... + 17652538.

It is an arithmetic number, because the mean of its divisors is an integer number (19510831454400).

Almost surely, 2^{154134021561451} is an apocalyptic number.

154134021561451 is a deficient number, since it is larger than the sum of its proper divisors (1952630073749).

154134021561451 is a wasteful number, since it uses less digits than its factorization.

154134021561451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19581449.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 154134021561451 in words is "one hundred fifty-four trillion, one hundred thirty-four billion, twenty-one million, five hundred sixty-one thousand, four hundred fifty-one".