123451542051 has 8 divisors (see below), whose sum is σ = 164745068544. Its totient is φ = 82229521800.

The previous prime is 123451542041. The next prime is 123451542101. The reversal of 123451542051 is 150245154321.

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

It is not a de Polignac number, because 123451542051 - 2²⁷ = 123317324323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123451542041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17872531 + ... + 17879436.

It is an arithmetic number, because the mean of its divisors is an integer number (20593133568).

Almost surely, 2^123451542051 is an apocalyptic number.

123451542051 is a deficient number, since it is larger than the sum of its proper divisors (41293526493).

123451542051 is a wasteful number, since it uses less digits than its factorization.

123451542051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35753121.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 123451542051 its reverse (150245154321), we get a palindrome (273696696372).

The spelling of 123451542051 in words is "one hundred twenty-three billion, four hundred fifty-one million, five hundred forty-two thousand, fifty-one".