11977653500 has 24 divisors (see below), whose sum is σ = 26159196336. Its totient is φ = 4791061200.

The previous prime is 11977653497. The next prime is 11977653503. The reversal of 11977653500 is 535677911.

It is an interprime number because it is at equal distance from previous prime (11977653497) and next prime (11977653503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11977653503) 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, 11977154 + ... + 11978153.

It is an arithmetic number, because the mean of its divisors is an integer number (1089966514).

Almost surely, 2^11977653500 is an apocalyptic number.

11977653500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11977653500 is an abundant number, since it is smaller than the sum of its proper divisors (14181542836).

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

11977653500 is a wasteful number, since it uses less digits than its factorization.

11977653500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23955326 (or 23955314 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 44.

The spelling of 11977653500 in words is "eleven billion, nine hundred seventy-seven million, six hundred fifty-three thousand, five hundred".