920387767867 has 4 divisors (see below), whose sum is σ = 921335645016. Its totient is φ = 919439890720.

The previous prime is 920387767841. The next prime is 920387767891. The reversal of 920387767867 is 768767783029.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920387767867 - 2³⁵ = 886028029499 is a prime.

It is a super-2 number, since 2×920387767867² (a number of 25 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 = 920387767796 and 920387767805.

It is not an unprimeable number, because it can be changed into a prime (920387767807) 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, 473937118 + ... + 473939059.

It is an arithmetic number, because the mean of its divisors is an integer number (230333911254).

Almost surely, 2^920387767867 is an apocalyptic number.

920387767867 is a deficient number, since it is larger than the sum of its proper divisors (947877149).

920387767867 is an equidigital number, since it uses as much as digits as its factorization.

920387767867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947877148.

The product of its (nonzero) digits is 298722816, while the sum is 70.

The spelling of 920387767867 in words is "nine hundred twenty billion, three hundred eighty-seven million, seven hundred sixty-seven thousand, eight hundred sixty-seven".