11401551012 has 48 divisors (see below), whose sum is σ = 27206746560. Its totient is φ = 3714891648.

The previous prime is 11401550981. The next prime is 11401551013. The reversal of 11401551012 is 21015510411.

It is a self number, because there is not a number n which added to its sum of digits gives 11401551012.

It is not an unprimeable number, because it can be changed into a prime (11401551013) 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, 137763 + ... + 204405.

It is an arithmetic number, because the mean of its divisors is an integer number (566807220).

Almost surely, 2^11401551012 is an apocalyptic number.

11401551012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11401551012 is an abundant number, since it is smaller than the sum of its proper divisors (15805195548).

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

11401551012 is a wasteful number, since it uses less digits than its factorization.

11401551012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66972 (or 66970 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The spelling of 11401551012 in words is "eleven billion, four hundred one million, five hundred fifty-one thousand, twelve".