11648436537 has 8 divisors (see below), whose sum is σ = 15545781760. Its totient is φ = 7758357840.

The previous prime is 11648436523. The next prime is 11648436559. The reversal of 11648436537 is 73563484611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11648436537 - 2¹¹ = 11648434489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11648436587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812889 + ... + 1819302.

It is an arithmetic number, because the mean of its divisors is an integer number (1943222720).

Almost surely, 2^11648436537 is an apocalyptic number.

It is an amenable number.

11648436537 is a deficient number, since it is larger than the sum of its proper divisors (3897345223).

11648436537 is a wasteful number, since it uses less digits than its factorization.

11648436537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633263.

The product of its digits is 1451520, while the sum is 48.

The spelling of 11648436537 in words is "eleven billion, six hundred forty-eight million, four hundred thirty-six thousand, five hundred thirty-seven".