36991687050 has 72 divisors (see below), whose sum is σ = 99483096960. Its totient is φ = 9854647200.

The previous prime is 36991687009. The next prime is 36991687063. The reversal of 36991687050 is 5078619963.

36991687050 is a `hidden beast` number, since 369 + 9 + 168 + 70 + 50 = 666.

It is a super-3 number, since 3×36991687050³ (a number of 33 digits) contains 333 as substring.

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, 418215 + ... + 498885.

It is an arithmetic number, because the mean of its divisors is an integer number (1381709680).

Almost surely, 2^36991687050 is an apocalyptic number.

36991687050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 36991687050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49741548480).

36991687050 is an abundant number, since it is smaller than the sum of its proper divisors (62491409910).

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

36991687050 is a wasteful number, since it uses less digits than its factorization.

36991687050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81708 (or 81700 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 36991687050 in words is "thirty-six billion, nine hundred ninety-one million, six hundred eighty-seven thousand, fifty".