11898749772 has 288 divisors, whose sum is σ = 40683955200. Its totient is φ = 2972640384.

The previous prime is 11898749749. The next prime is 11898749839. The reversal of 11898749772 is 27794789811.

It is a super-2 number, since 2×11898749772² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1302573 + ... + 1311675.

Almost surely, 2^11898749772 is an apocalyptic number.

11898749772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11898749772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20341977600).

11898749772 is an abundant number, since it is smaller than the sum of its proper divisors (28785205428).

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

11898749772 is a wasteful number, since it uses less digits than its factorization.

11898749772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9162 (or 9147 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 63.

The spelling of 11898749772 in words is "eleven billion, eight hundred ninety-eight million, seven hundred forty-nine thousand, seven hundred seventy-two".