7316821887420 has 24 divisors (see below), whose sum is σ = 20487101284944. Its totient is φ = 1951152503296.

The previous prime is 7316821887391. The next prime is 7316821887433. The reversal of 7316821887420 is 247881286137.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60973515669 + ... + 60973515788.

It is an arithmetic number, because the mean of its divisors is an integer number (853629220206).

Almost surely, 2^{7316821887420} is an apocalyptic number.

It is an amenable number.

7316821887420 is an abundant number, since it is smaller than the sum of its proper divisors (13170279397524).

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

7316821887420 is a wasteful number, since it uses less digits than its factorization.

7316821887420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121947031469 (or 121947031467 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 7316821887420 in words is "seven trillion, three hundred sixteen billion, eight hundred twenty-one million, eight hundred eighty-seven thousand, four hundred twenty".