12451155550 has 12 divisors (see below), whose sum is σ = 23159149416. Its totient is φ = 4980462200.

The previous prime is 12451155533. The next prime is 12451155553. The reversal of 12451155550 is 5555115421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12451155553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124511506 + ... + 124511605.

It is an arithmetic number, because the mean of its divisors is an integer number (1929929118).

Almost surely, 2^12451155550 is an apocalyptic number.

12451155550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12451155550 is a deficient number, since it is larger than the sum of its proper divisors (10707993866).

12451155550 is a wasteful number, since it uses less digits than its factorization.

12451155550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249023123 (or 249023118 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 12451155550 in words is "twelve billion, four hundred fifty-one million, one hundred fifty-five thousand, five hundred fifty".