1351747747620 has 144 divisors (see below), whose sum is σ = 4161572618112. Its totient is φ = 355115888640.

The previous prime is 1351747747591. The next prime is 1351747747627. The reversal of 1351747747620 is 267477471531.

1351747747620 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 7 + 4 + 7 + 7 + 4 + 7 + 620 = 666.

It is not an unprimeable number, because it can be changed into a prime (1351747747627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3389335 + ... + 3767105.

It is an arithmetic number, because the mean of its divisors is an integer number (28899809848).

Almost surely, 2^{1351747747620} is an apocalyptic number.

1351747747620 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 1351747747620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080786309056).

1351747747620 is an abundant number, since it is smaller than the sum of its proper divisors (2809824870492).

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

1351747747620 is a wasteful number, since it uses less digits than its factorization.

1351747747620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378082 (or 378077 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 54.

The spelling of 1351747747620 in words is "one trillion, three hundred fifty-one billion, seven hundred forty-seven million, seven hundred forty-seven thousand, six hundred twenty".