123676487820 has 72 divisors (see below), whose sum is σ = 389046547344. Its totient is φ = 32980395456.

The previous prime is 123676487807. The next prime is 123676487821. The reversal of 123676487820 is 28784676321.

123676487820 is a `hidden beast` number, since 1 + 23 + 67 + 6 + 487 + 82 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (123676487821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12719059 + ... + 12728778.

Almost surely, 2^123676487820 is an apocalyptic number.

123676487820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123676487820 is an abundant number, since it is smaller than the sum of its proper divisors (265370059524).

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

123676487820 is a wasteful number, since it uses less digits than its factorization.

123676487820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25447861 (or 25447847 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 123676487820 in words is "one hundred twenty-three billion, six hundred seventy-six million, four hundred eighty-seven thousand, eight hundred twenty".