11901234072 has 96 divisors (see below), whose sum is σ = 37273143600. Its totient is φ = 3138782976.

The previous prime is 11901234061. The next prime is 11901234091. The reversal of 11901234072 is 27043210911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373947 + ... + 404522.

Almost surely, 2^11901234072 is an apocalyptic number.

11901234072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11901234072 is an abundant number, since it is smaller than the sum of its proper divisors (25371909528).

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

11901234072 is a wasteful number, since it uses less digits than its factorization.

11901234072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778505 (or 778494 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

Adding to 11901234072 its reverse (27043210911), we get a palindrome (38944444983).

The spelling of 11901234072 in words is "eleven billion, nine hundred one million, two hundred thirty-four thousand, seventy-two".