20914192551 has 8 divisors (see below), whose sum is σ = 31869245824. Its totient is φ = 11950967160.

The previous prime is 20914192531. The next prime is 20914192561. The reversal of 20914192551 is 15529141902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20914192551 - 2⁷ = 20914192423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20914192531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497956945 + ... + 497956986.

It is an arithmetic number, because the mean of its divisors is an integer number (3983655728).

Almost surely, 2^20914192551 is an apocalyptic number.

20914192551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20914192551 is a deficient number, since it is larger than the sum of its proper divisors (10955053273).

20914192551 is an equidigital number, since it uses as much as digits as its factorization.

20914192551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995913941.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 20914192551 in words is "twenty billion, nine hundred fourteen million, one hundred ninety-two thousand, five hundred fifty-one".