101667456787 has 4 divisors (see below), whose sum is σ = 109488030400. Its totient is φ = 93846883176.

The previous prime is 101667456743. The next prime is 101667456809. The reversal of 101667456787 is 787654766101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787654766101 = 7 ⋅112522109443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101667456787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101662456787) 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, 3910286787 + ... + 3910286812.

It is an arithmetic number, because the mean of its divisors is an integer number (27372007600).

Almost surely, 2^101667456787 is an apocalyptic number.

101667456787 is a deficient number, since it is larger than the sum of its proper divisors (7820573613).

101667456787 is an equidigital number, since it uses as much as digits as its factorization.

101667456787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820573612.

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 101667456787 in words is "one hundred one billion, six hundred sixty-seven million, four hundred fifty-six thousand, seven hundred eighty-seven".