15533452450 has 24 divisors (see below), whose sum is σ = 29037427200. Its totient is φ = 6182154000.

The previous prime is 15533452433. The next prime is 15533452469. The reversal of 15533452450 is 5425433551.

It is a super-2 number, since 2×15533452450² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770626 + ... + 790525.

It is an arithmetic number, because the mean of its divisors is an integer number (1209892800).

Almost surely, 2^15533452450 is an apocalyptic number.

15533452450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15533452450 is a deficient number, since it is larger than the sum of its proper divisors (13503974750).

15533452450 is a wasteful number, since it uses less digits than its factorization.

15533452450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561362 (or 1561357 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 15533452450 in words is "fifteen billion, five hundred thirty-three million, four hundred fifty-two thousand, four hundred fifty".