36371261991 has 16 divisors (see below), whose sum is σ = 51837730560. Its totient is φ = 22627577280.

The previous prime is 36371261981. The next prime is 36371262001. The reversal of 36371261991 is 19916217363.

It is an interprime number because it is at equal distance from previous prime (36371261981) and next prime (36371262001).

It is not a de Polignac number, because 36371261991 - 2¹³ = 36371253799 is a prime.

It is a super-2 number, since 2×36371261991² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36371261991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36371261981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6425461 + ... + 6431118.

It is an arithmetic number, because the mean of its divisors is an integer number (3239858160).

Almost surely, 2^36371261991 is an apocalyptic number.

36371261991 is a deficient number, since it is larger than the sum of its proper divisors (15466468569).

36371261991 is a wasteful number, since it uses less digits than its factorization.

36371261991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856646.

The product of its digits is 367416, while the sum is 48.

The spelling of 36371261991 in words is "thirty-six billion, three hundred seventy-one million, two hundred sixty-one thousand, nine hundred ninety-one".