542697744251 has 8 divisors (see below), whose sum is σ = 604596956880. Its totient is φ = 483677564832.

The previous prime is 542697744247. The next prime is 542697744269. The reversal of 542697744251 is 152447796245.

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 542697744251 - 2² = 542697744247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542697744151) 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, 719757905 + ... + 719758658.

It is an arithmetic number, because the mean of its divisors is an integer number (75574619610).

Almost surely, 2^542697744251 is an apocalyptic number.

542697744251 is a deficient number, since it is larger than the sum of its proper divisors (61899212629).

542697744251 is a wasteful number, since it uses less digits than its factorization.

542697744251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439516605.

The product of its digits is 16934400, while the sum is 56.

The spelling of 542697744251 in words is "five hundred forty-two billion, six hundred ninety-seven million, seven hundred forty-four thousand, two hundred fifty-one".