1015500450645 has 24 divisors (see below), whose sum is σ = 1766420594016. Its totient is φ = 539686451808.

The previous prime is 1015500450637. The next prime is 1015500450677. The reversal of 1015500450645 is 5460540055101.

1015500450645 is a `hidden beast` number, since 1 + 0 + 1 + 5 + 5 + 0 + 0 + 4 + 5 + 0 + 645 = 666.

1015500450645 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1015500450645 - 2³ = 1015500450637 is a prime.

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, 39857719 + ... + 39883188.

It is an arithmetic number, because the mean of its divisors is an integer number (73600858084).

Almost surely, 2^{1015500450645} is an apocalyptic number.

1015500450645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015500450645 is a deficient number, since it is larger than the sum of its proper divisors (750920143371).

1015500450645 is a wasteful number, since it uses less digits than its factorization.

1015500450645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79741201 (or 79741198 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 1015500450645 in words is "one trillion, fifteen billion, five hundred million, four hundred fifty thousand, six hundred forty-five".