83250778078 has 16 divisors (see below), whose sum is σ = 134508210480. Its totient is φ = 38415954816.

The previous prime is 83250778069. The next prime is 83250778139. The reversal of 83250778078 is 87087705238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174475 + ... + 443782.

It is an arithmetic number, because the mean of its divisors is an integer number (8406763155).

Almost surely, 2^83250778078 is an apocalyptic number.

83250778078 is a deficient number, since it is larger than the sum of its proper divisors (51257432402).

83250778078 is a wasteful number, since it uses less digits than its factorization.

83250778078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623451.

The product of its (nonzero) digits is 5268480, while the sum is 55.

It can be divided in two parts, 83250 and 778078, that added together give a triangular number (861328 = T₁₃₁₂).

The spelling of 83250778078 in words is "eighty-three billion, two hundred fifty million, seven hundred seventy-eight thousand, seventy-eight".