123687445446 has 32 divisors (see below), whose sum is σ = 275388616800. Its totient is φ = 41150004480.

The previous prime is 123687445439. The next prime is 123687445451. The reversal of 123687445446 is 644544786321.

123687445446 is a `hidden beast` number, since 1 + 23 + 6 + 8 + 74 + 4 + 544 + 6 = 666.

It is a super-2 number, since 2×123687445446² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 123687445392 and 123687445401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2170051 + ... + 2226318.

It is an arithmetic number, because the mean of its divisors is an integer number (8605894275).

Almost surely, 2^123687445446 is an apocalyptic number.

123687445446 is an abundant number, since it is smaller than the sum of its proper divisors (151701171354).

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

123687445446 is a wasteful number, since it uses less digits than its factorization.

123687445446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396901 (or 4396895 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 54.

The spelling of 123687445446 in words is "one hundred twenty-three billion, six hundred eighty-seven million, four hundred forty-five thousand, four hundred forty-six".