1207445501538 has 48 divisors (see below), whose sum is σ = 2639791005696. Its totient is φ = 398849330880.

The previous prime is 1207445501491. The next prime is 1207445501543. The reversal of 1207445501538 is 8351055447021.

1207445501538 is a `hidden beast` number, since 1 + 2 + 0 + 7 + 44 + 550 + 1 + 53 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1207445501493 and 1207445501502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1666798 + ... + 2278838.

It is an arithmetic number, because the mean of its divisors is an integer number (54995645952).

Almost surely, 2^{1207445501538} is an apocalyptic number.

1207445501538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1207445501538 is an abundant number, since it is smaller than the sum of its proper divisors (1432345504158).

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

1207445501538 is a wasteful number, since it uses less digits than its factorization.

1207445501538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613039 (or 613036 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 1207445501538 in words is "one trillion, two hundred seven billion, four hundred forty-five million, five hundred one thousand, five hundred thirty-eight".