76491537409 has 16 divisors (see below), whose sum is σ = 92536456320. Its totient is φ = 61831163520.

The previous prime is 76491537403. The next prime is 76491537433. The reversal of 76491537409 is 90473519467.

It is not a de Polignac number, because 76491537409 - 2³ = 76491537401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76491537409.

It is not an unprimeable number, because it can be changed into a prime (76491537401) 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, 4372732 + ... + 4390189.

It is an arithmetic number, because the mean of its divisors is an integer number (5783528520).

Almost surely, 2^76491537409 is an apocalyptic number.

It is an amenable number.

76491537409 is a deficient number, since it is larger than the sum of its proper divisors (16044918911).

76491537409 is a wasteful number, since it uses less digits than its factorization.

76491537409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763000.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 76491537409 in words is "seventy-six billion, four hundred ninety-one million, five hundred thirty-seven thousand, four hundred nine".