85678920501 has 4 divisors (see below), whose sum is σ = 114238560672. Its totient is φ = 57119280332.

The previous prime is 85678920497. The next prime is 85678920521. The reversal of 85678920501 is 10502987658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85678920501 - 2² = 85678920497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85678920521) 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, 14279820081 + ... + 14279820086.

It is an arithmetic number, because the mean of its divisors is an integer number (28559640168).

Almost surely, 2^85678920501 is an apocalyptic number.

It is an amenable number.

85678920501 is a deficient number, since it is larger than the sum of its proper divisors (28559640171).

85678920501 is a wasteful number, since it uses less digits than its factorization.

85678920501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28559640170.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 85678920501 in words is "eighty-five billion, six hundred seventy-eight million, nine hundred twenty thousand, five hundred one".