540021554141251 has 12 divisors (see below), whose sum is σ = 676510518375552. Its totient is φ = 427269801078288.

The previous prime is 540021554141249. The next prime is 540021554141257. The reversal of 540021554141251 is 152141455120045.

It is not a de Polignac number, because 540021554141251 - 2¹ = 540021554141249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540021554141257) 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, 423878770275 + ... + 423878771548.

It is an arithmetic number, because the mean of its divisors is an integer number (56375876531296).

Almost surely, 2^{540021554141251} is an apocalyptic number.

540021554141251 is a deficient number, since it is larger than the sum of its proper divisors (136488964234301).

540021554141251 is a wasteful number, since it uses less digits than its factorization.

540021554141251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847757541850 (or 847757541843 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 540021554141251 in words is "five hundred forty trillion, twenty-one billion, five hundred fifty-four million, one hundred forty-one thousand, two hundred fifty-one".