1550313431445 has 16 divisors (see below), whose sum is σ = 2480549097600. Its totient is φ = 826817961024.

The previous prime is 1550313431441. The next prime is 1550313431503. The reversal of 1550313431445 is 5441343130551.

It is not a de Polignac number, because 1550313431445 - 2² = 1550313431441 is a prime.

It is a super-3 number, since 3×1550313431445³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550313431441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161809 + ... + 1768278.

It is an arithmetic number, because the mean of its divisors is an integer number (155034318600).

Almost surely, 2^{1550313431445} is an apocalyptic number.

1550313431445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1550313431445 is a deficient number, since it is larger than the sum of its proper divisors (930235666155).

1550313431445 is a wasteful number, since it uses less digits than its factorization.

1550313431445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983644.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 1550313431445 its reverse (5441343130551), we get a palindrome (6991656561996).

The spelling of 1550313431445 in words is "one trillion, five hundred fifty billion, three hundred thirteen million, four hundred thirty-one thousand, four hundred forty-five".