18649371076550 has 24 divisors (see below), whose sum is σ = 34689617005896. Its totient is φ = 7459364171840.

The previous prime is 18649371076549. The next prime is 18649371076579. The reversal of 18649371076550 is 5567017394681.

It is a happy number.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8625104 + ... + 10568403.

It is an arithmetic number, because the mean of its divisors is an integer number (1445400708579).

Almost surely, 2^{18649371076550} is an apocalyptic number.

18649371076550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18649371076550 is a deficient number, since it is larger than the sum of its proper divisors (16040245929346).

18649371076550 is a wasteful number, since it uses less digits than its factorization.

18649371076550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212952 (or 19212947 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 62.

The spelling of 18649371076550 in words is "eighteen trillion, six hundred forty-nine billion, three hundred seventy-one million, seventy-six thousand, five hundred fifty".