11987032437 has 6 divisors (see below), whose sum is σ = 17314602422. Its totient is φ = 7991354952.

The previous prime is 11987032433. The next prime is 11987032459. The reversal of 11987032437 is 73423078911.

11987032437 is a `hidden beast` number, since 119 + 8 + 70 + 32 + 437 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8628366321 + 3358666116 = 92889^2 + 57954^2 .

It is not a de Polignac number, because 11987032437 - 2² = 11987032433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11987032392 and 11987032401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987032433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665946238 + ... + 665946255.

Almost surely, 2^11987032437 is an apocalyptic number.

It is an amenable number.

11987032437 is a deficient number, since it is larger than the sum of its proper divisors (5327569985).

11987032437 is a wasteful number, since it uses less digits than its factorization.

11987032437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331892499 (or 1331892496 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 11987032437 in words is "eleven billion, nine hundred eighty-seven million, thirty-two thousand, four hundred thirty-seven".