47305156621 has 2 divisors, whose sum is σ = 47305156622. Its totient is φ = 47305156620.

The previous prime is 47305156609. The next prime is 47305156651. The reversal of 47305156621 is 12665150374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32973475396 + 14331681225 = 181586^2 + 119715^2 .

It is a cyclic number.

It is not a de Polignac number, because 47305156621 - 2²¹ = 47303059469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47305156651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23652578310 + 23652578311.

It is an arithmetic number, because the mean of its divisors is an integer number (23652578311).

Almost surely, 2^47305156621 is an apocalyptic number.

It is an amenable number.

47305156621 is a deficient number, since it is larger than the sum of its proper divisors (1).

47305156621 is an equidigital number, since it uses as much as digits as its factorization.

47305156621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 47305156621 in words is "forty-seven billion, three hundred five million, one hundred fifty-six thousand, six hundred twenty-one".