83626553540 has 24 divisors (see below), whose sum is σ = 181671479640. Its totient is φ = 32297151488.

The previous prime is 83626553539. The next prime is 83626553557. The reversal of 83626553540 is 4535562638.

It can be written as a sum of positive squares in 4 ways, for example, as 15661020736 + 67965532804 = 125144^2 + 260702^2 .

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, 72091277 + ... + 72092436.

It is an arithmetic number, because the mean of its divisors is an integer number (7569644985).

Almost surely, 2^83626553540 is an apocalyptic number.

It is an amenable number.

83626553540 is an abundant number, since it is smaller than the sum of its proper divisors (98044926100).

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

83626553540 is a wasteful number, since it uses less digits than its factorization.

83626553540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144183751 (or 144183749 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 83626553540 in words is "eighty-three billion, six hundred twenty-six million, five hundred fifty-three thousand, five hundred forty".