1550851347720 has 128 divisors (see below), whose sum is σ = 4824993744000. Its totient is φ = 398303539200.

The previous prime is 1550851347709. The next prime is 1550851347757. The reversal of 1550851347720 is 277431580551.

It is a self number, because there is not a number n which added to its sum of digits gives 1550851347720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839811 + ... + 1951149.

It is an arithmetic number, because the mean of its divisors is an integer number (37695263625).

Almost surely, 2^{1550851347720} is an apocalyptic number.

1550851347720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550851347720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2412496872000).

1550851347720 is an abundant number, since it is smaller than the sum of its proper divisors (3274142396280).

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

1550851347720 is a wasteful number, since it uses less digits than its factorization.

1550851347720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111783 (or 1111779 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 1550851347720 in words is "one trillion, five hundred fifty billion, eight hundred fifty-one million, three hundred forty-seven thousand, seven hundred twenty".