85790672477 has 4 divisors (see below), whose sum is σ = 86109597180. Its totient is φ = 85471747776.

The previous prime is 85790672419. The next prime is 85790672489. The reversal of 85790672477 is 77427609758.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52836079321 + 32954593156 = 229861^2 + 181534^2 .

It is a cyclic number.

It is not a de Polignac number, because 85790672477 - 2⁶ = 85790672413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85790672417) 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, 159461948 + ... + 159462485.

It is an arithmetic number, because the mean of its divisors is an integer number (21527399295).

Almost surely, 2^85790672477 is an apocalyptic number.

It is an amenable number.

85790672477 is a deficient number, since it is larger than the sum of its proper divisors (318924703).

85790672477 is a wasteful number, since it uses less digits than its factorization.

85790672477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318924702.

The product of its (nonzero) digits is 41489280, while the sum is 62.

The spelling of 85790672477 in words is "eighty-five billion, seven hundred ninety million, six hundred seventy-two thousand, four hundred seventy-seven".