123187086950 has 24 divisors (see below), whose sum is σ = 234003049632. Its totient is φ = 48226433120.

The previous prime is 123187086937. The next prime is 123187086959. The reversal of 123187086950 is 59680781321.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123187086959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26207669 + ... + 26212368.

It is an arithmetic number, because the mean of its divisors is an integer number (9750127068).

Almost surely, 2^123187086950 is an apocalyptic number.

123187086950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123187086950 is a deficient number, since it is larger than the sum of its proper divisors (110815962682).

123187086950 is a wasteful number, since it uses less digits than its factorization.

123187086950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52420096 (or 52420091 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 123187086950 in words is "one hundred twenty-three billion, one hundred eighty-seven million, eighty-six thousand, nine hundred fifty".