26485435971 has 20 divisors (see below), whose sum is σ = 40311173232. Its totient is φ = 17323804368.

The previous prime is 26485435969. The next prime is 26485435997. The reversal of 26485435971 is 17953458462.

It is a happy number.

26485435971 is a `hidden beast` number, since 2 + 6 + 4 + 8 + 5 + 43 + 597 + 1 = 666.

It is not a de Polignac number, because 26485435971 - 2¹ = 26485435969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26485431971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3080431 + ... + 3089016.

Almost surely, 2^26485435971 is an apocalyptic number.

26485435971 is a deficient number, since it is larger than the sum of its proper divisors (13825737261).

26485435971 is an equidigital number, since it uses as much as digits as its factorization.

26485435971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169512 (or 6169503 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 26485435971 in words is "twenty-six billion, four hundred eighty-five million, four hundred thirty-five thousand, nine hundred seventy-one".