15451491002 has 16 divisors (see below), whose sum is σ = 23588560800. Its totient is φ = 7588842960.

The previous prime is 15451491001. The next prime is 15451491007. The reversal of 15451491002 is 20019415451.

It is a self number, because there is not a number n which added to its sum of digits gives 15451491002.

It is not an unprimeable number, because it can be changed into a prime (15451491001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101624 + ... + 203052.

It is an arithmetic number, because the mean of its divisors is an integer number (1474285050).

Almost surely, 2^15451491002 is an apocalyptic number.

15451491002 is a deficient number, since it is larger than the sum of its proper divisors (8137069798).

15451491002 is a wasteful number, since it uses less digits than its factorization.

15451491002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102781.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 15451491002 in words is "fifteen billion, four hundred fifty-one million, four hundred ninety-one thousand, two".