14991820757 has 4 divisors (see below), whose sum is σ = 15181590720. Its totient is φ = 14802050796.

The previous prime is 14991820721. The next prime is 14991820793. The reversal of 14991820757 is 75702819941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (14991820721) and next prime (14991820793).

It is a cyclic number.

It is not a de Polignac number, because 14991820757 - 2¹² = 14991816661 is a prime.

It is a super-2 number, since 2×14991820757² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14991820699 and 14991820708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991820057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94884863 + ... + 94885020.

It is an arithmetic number, because the mean of its divisors is an integer number (3795397680).

Almost surely, 2^14991820757 is an apocalyptic number.

It is an amenable number.

14991820757 is a deficient number, since it is larger than the sum of its proper divisors (189769963).

14991820757 is an equidigital number, since it uses as much as digits as its factorization.

14991820757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189769962.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 14991820757 in words is "fourteen billion, nine hundred ninety-one million, eight hundred twenty thousand, seven hundred fifty-seven".