36807121551 has 4 divisors (see below), whose sum is σ = 49076162072. Its totient is φ = 24538081032.

The previous prime is 36807121543. The next prime is 36807121601. The reversal of 36807121551 is 15512170863.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 36807121551 - 2³ = 36807121543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36807121051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6134520256 + ... + 6134520261.

It is an arithmetic number, because the mean of its divisors is an integer number (12269040518).

Almost surely, 2^36807121551 is an apocalyptic number.

36807121551 is a deficient number, since it is larger than the sum of its proper divisors (12269040521).

36807121551 is a wasteful number, since it uses less digits than its factorization.

36807121551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12269040520.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 36807121551 in words is "thirty-six billion, eight hundred seven million, one hundred twenty-one thousand, five hundred fifty-one".