542405646251 has 8 divisors (see below), whose sum is σ = 621186309120. Its totient is φ = 463948518888.

The previous prime is 542405646247. The next prime is 542405646253. The reversal of 542405646251 is 152646504245.

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 542405646251 - 2² = 542405646247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542405646253) 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, 80880281 + ... + 80886986.

It is an arithmetic number, because the mean of its divisors is an integer number (77648288640).

Almost surely, 2^542405646251 is an apocalyptic number.

542405646251 is a deficient number, since it is larger than the sum of its proper divisors (78780662869).

542405646251 is a wasteful number, since it uses less digits than its factorization.

542405646251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161767753.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 542405646251 in words is "five hundred forty-two billion, four hundred five million, six hundred forty-six thousand, two hundred fifty-one".