36261640631 has 4 divisors (see below), whose sum is σ = 36377492832. Its totient is φ = 36145788432.

The previous prime is 36261640621. The next prime is 36261640669. The reversal of 36261640631 is 13604616263.

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

It is a cyclic number.

It is not a de Polignac number, because 36261640631 - 2¹⁰ = 36261639607 is a prime.

It is a super-2 number, since 2×36261640631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36261640621) 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, 57925631 + ... + 57926256.

It is an arithmetic number, because the mean of its divisors is an integer number (9094373208).

Almost surely, 2^36261640631 is an apocalyptic number.

36261640631 is a deficient number, since it is larger than the sum of its proper divisors (115852201).

36261640631 is a wasteful number, since it uses less digits than its factorization.

36261640631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115852200.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 36261640631 in words is "thirty-six billion, two hundred sixty-one million, six hundred forty thousand, six hundred thirty-one".