123655454430 has 32 divisors (see below), whose sum is σ = 299711445408. Its totient is φ = 32648304000.

The previous prime is 123655454411. The next prime is 123655454431. The reversal of 123655454430 is 34454556321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123655454431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20402161 + ... + 20408220.

It is an arithmetic number, because the mean of its divisors is an integer number (9365982669).

Almost surely, 2^123655454430 is an apocalyptic number.

123655454430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123655454430 is an abundant number, since it is smaller than the sum of its proper divisors (176055990978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123655454430 is a wasteful number, since it uses less digits than its factorization.

123655454430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40810492.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 123655454430 in words is "one hundred twenty-three billion, six hundred fifty-five million, four hundred fifty-four thousand, four hundred thirty".