85177851951 has 16 divisors (see below), whose sum is σ = 114184163808. Its totient is φ = 56478576000.

The previous prime is 85177851949. The next prime is 85177851953. The reversal of 85177851951 is 15915877158.

It is an interprime number because it is at equal distance from previous prime (85177851949) and next prime (85177851953).

It is not a de Polignac number, because 85177851951 - 2¹ = 85177851949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85177851891 and 85177851900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85177851953) 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, 1929061 + ... + 1972721.

It is an arithmetic number, because the mean of its divisors is an integer number (7136510238).

Almost surely, 2^85177851951 is an apocalyptic number.

85177851951 is a deficient number, since it is larger than the sum of its proper divisors (29006311857).

85177851951 is a wasteful number, since it uses less digits than its factorization.

85177851951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47162.

The product of its digits is 3528000, while the sum is 57.

The spelling of 85177851951 in words is "eighty-five billion, one hundred seventy-seven million, eight hundred fifty-one thousand, nine hundred fifty-one".