7850741209920 has 896 divisors, whose sum is σ = 32420779130880. Its totient is φ = 1751243120640.

The previous prime is 7850741209897. The next prime is 7850741209921. The reversal of 7850741209920 is 299021470587.

7850741209920 is a `hidden beast` number, since 7 + 8 + 507 + 4 + 1 + 20 + 99 + 20 = 666.

It is a super-2 number, since 2×7850741209920² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7850741209921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 612232629 + ... + 612245451.

It is an arithmetic number, because the mean of its divisors is an integer number (36183905280).

Almost surely, 2^{7850741209920} is an apocalyptic number.

7850741209920 is a gapful number since it is divisible by the number (70) 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 7850741209920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16210389565440).

7850741209920 is an abundant number, since it is smaller than the sum of its proper divisors (24570037920960).

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

7850741209920 is a wasteful number, since it uses less digits than its factorization.

7850741209920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100 (or 13084 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 7850741209920 in words is "seven trillion, eight hundred fifty billion, seven hundred forty-one million, two hundred nine thousand, nine hundred twenty".