11947972030 has 16 divisors (see below), whose sum is σ = 21707345520. Its totient is φ = 4734523072.

The previous prime is 11947972019. The next prime is 11947972033. The reversal of 11947972030 is 3027974911.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11947972033) 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, 5582095 + ... + 5584234.

It is an arithmetic number, because the mean of its divisors is an integer number (1356709095).

Almost surely, 2^11947972030 is an apocalyptic number.

11947972030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11947972030 is a deficient number, since it is larger than the sum of its proper divisors (9759373490).

11947972030 is a wasteful number, since it uses less digits than its factorization.

11947972030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166443.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 11947972030 in words is "eleven billion, nine hundred forty-seven million, nine hundred seventy-two thousand, thirty".