101830420451 has 4 divisors (see below), whose sum is σ = 101831960400. Its totient is φ = 101828880504.

The previous prime is 101830420429. The next prime is 101830420493. The reversal of 101830420451 is 154024038101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101830420451 - 2¹⁸ = 101830158307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101830423451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666116 + ... + 804593.

It is an arithmetic number, because the mean of its divisors is an integer number (25457990100).

Almost surely, 2^101830420451 is an apocalyptic number.

101830420451 is a deficient number, since it is larger than the sum of its proper divisors (1539949).

101830420451 is an equidigital number, since it uses as much as digits as its factorization.

101830420451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539948.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 101830420451 its reverse (154024038101), we get a palindrome (255854458552).

The spelling of 101830420451 in words is "one hundred one billion, eight hundred thirty million, four hundred twenty thousand, four hundred fifty-one".