1020134251550 has 96 divisors (see below), whose sum is σ = 2038391231040. Its totient is φ = 378449971200.

The previous prime is 1020134251541. The next prime is 1020134251559. The reversal of 1020134251550 is 551524310201.

It is an interprime number because it is at equal distance from previous prime (1020134251541) and next prime (1020134251559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020134251559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187625432 + ... + 187630868.

It is an arithmetic number, because the mean of its divisors is an integer number (21233241990).

Almost surely, 2^{1020134251550} is an apocalyptic number.

1020134251550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020134251550 is a deficient number, since it is larger than the sum of its proper divisors (1018256979490).

1020134251550 is a wasteful number, since it uses less digits than its factorization.

1020134251550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646 (or 8641 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 1020134251550 its reverse (551524310201), we get a palindrome (1571658561751).

The spelling of 1020134251550 in words is "one trillion, twenty billion, one hundred thirty-four million, two hundred fifty-one thousand, five hundred fifty".