756743421221420 has 12 divisors (see below), whose sum is σ = 1589161184565024. Its totient is φ = 302697368488560.

The previous prime is 756743421221387. The next prime is 756743421221441. The reversal of 756743421221420 is 24122124347657.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18918585530516 + ... + 18918585530555.

It is an arithmetic number, because the mean of its divisors is an integer number (132430098713752).

Almost surely, 2^{756743421221420} is an apocalyptic number.

It is an amenable number.

756743421221420 is an abundant number, since it is smaller than the sum of its proper divisors (832417763343604).

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

756743421221420 is a wasteful number, since it uses less digits than its factorization.

756743421221420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37837171061080 (or 37837171061078 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 50.

The spelling of 756743421221420 in words is "seven hundred fifty-six trillion, seven hundred forty-three billion, four hundred twenty-one million, two hundred twenty-one thousand, four hundred twenty".