1020313455550 has 24 divisors (see below), whose sum is σ = 1924512372432. Its totient is φ = 402377136000.

The previous prime is 1020313455529. The next prime is 1020313455589. The reversal of 1020313455550 is 555543130201.

It is a congruent number.

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, 143702571 + ... + 143709670.

It is an arithmetic number, because the mean of its divisors is an integer number (80188015518).

Almost surely, 2^{1020313455550} is an apocalyptic number.

1020313455550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020313455550 is a deficient number, since it is larger than the sum of its proper divisors (904198916882).

1020313455550 is a wasteful number, since it uses less digits than its factorization.

1020313455550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287412324 (or 287412319 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 1020313455550 its reverse (555543130201), we get a palindrome (1575856585751).

The spelling of 1020313455550 in words is "one trillion, twenty billion, three hundred thirteen million, four hundred fifty-five thousand, five hundred fifty".