85155312798 has 48 divisors (see below), whose sum is σ = 192843356160. Its totient is φ = 28161579096.

The previous prime is 85155312793. The next prime is 85155312829. The reversal of 85155312798 is 89721355158.

85155312798 is a `hidden beast` number, since 8 + 5 + 1 + 553 + 12 + 79 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85155312793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628108 + ... + 751551.

It is an arithmetic number, because the mean of its divisors is an integer number (4017569920).

Almost surely, 2^85155312798 is an apocalyptic number.

85155312798 is an abundant number, since it is smaller than the sum of its proper divisors (107688043362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85155312798 is a wasteful number, since it uses less digits than its factorization.

85155312798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379803 (or 1379791 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 54.

The spelling of 85155312798 in words is "eighty-five billion, one hundred fifty-five million, three hundred twelve thousand, seven hundred ninety-eight".