36821131542 has 72 divisors (see below), whose sum is σ = 87227500464. Its totient is φ = 11219487552.

The previous prime is 36821131517. The next prime is 36821131561. The reversal of 36821131542 is 24513112863.

36821131542 is a `hidden beast` number, since 3 + 6 + 82 + 1 + 1 + 31 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 36821131497 and 36821131506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 254568 + ... + 372084.

It is an arithmetic number, because the mean of its divisors is an integer number (1211493062).

Almost surely, 2^36821131542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36821131542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43613750232).

36821131542 is an abundant number, since it is smaller than the sum of its proper divisors (50406368922).

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

36821131542 is a wasteful number, since it uses less digits than its factorization.

36821131542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117654 (or 117638 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 36821131542 in words is "thirty-six billion, eight hundred twenty-one million, one hundred thirty-one thousand, five hundred forty-two".