169378745761 has 16 divisors (see below), whose sum is σ = 183761561088. Its totient is φ = 155488883200.

The previous prime is 169378745663. The next prime is 169378745771. The reversal of 169378745761 is 167547873961.

It is a cyclic number.

It is not a de Polignac number, because 169378745761 - 2²³ = 169370357153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169378745693 and 169378745702.

It is not an unprimeable number, because it can be changed into a prime (169378745771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032856 + ... + 3088198.

It is an arithmetic number, because the mean of its divisors is an integer number (11485097568).

Almost surely, 2^169378745761 is an apocalyptic number.

It is an amenable number.

169378745761 is a deficient number, since it is larger than the sum of its proper divisors (14382815327).

169378745761 is a wasteful number, since it uses less digits than its factorization.

169378745761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59792.

The product of its digits is 53343360, while the sum is 64.

The spelling of 169378745761 in words is "one hundred sixty-nine billion, three hundred seventy-eight million, seven hundred forty-five thousand, seven hundred sixty-one".