11697509580 has 48 divisors (see below), whose sum is σ = 32762042880. Its totient is φ = 3118477248.

The previous prime is 11697509573. The next prime is 11697509587. The reversal of 11697509580 is 8590579611.

It is an interprime number because it is at equal distance from previous prime (11697509573) and next prime (11697509587).

It is not an unprimeable number, because it can be changed into a prime (11697509587) 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, 210267 + ... + 260013.

It is an arithmetic number, because the mean of its divisors is an integer number (682542560).

Almost surely, 2^11697509580 is an apocalyptic number.

11697509580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11697509580 is an abundant number, since it is smaller than the sum of its proper divisors (21064533300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11697509580 is a wasteful number, since it uses less digits than its factorization.

11697509580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53678 (or 53676 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 11697509580 in words is "eleven billion, six hundred ninety-seven million, five hundred nine thousand, five hundred eighty".