47477555577493 has 2 divisors, whose sum is σ = 47477555577494. Its totient is φ = 47477555577492.

The previous prime is 47477555577437. The next prime is 47477555577659. The reversal of 47477555577493 is 39477555577474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42837051180004 + 4640504397489 = 6545002^2 + 2154183^2 .

It is a cyclic number.

It is not a de Polignac number, because 47477555577493 - 2⁹ = 47477555576981 is a prime.

It is a super-2 number, since 2×47477555577493² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47477555557493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23738777788746 + 23738777788747.

It is an arithmetic number, because the mean of its divisors is an integer number (23738777788747).

Almost surely, 2^{47477555577493} is an apocalyptic number.

It is an amenable number.

47477555577493 is a deficient number, since it is larger than the sum of its proper divisors (1).

47477555577493 is an equidigital number, since it uses as much as digits as its factorization.

47477555577493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18151560000, while the sum is 79.

The spelling of 47477555577493 in words is "forty-seven trillion, four hundred seventy-seven billion, five hundred fifty-five million, five hundred seventy-seven thousand, four hundred ninety-three".