47997245881509 has 16 divisors (see below), whose sum is σ = 64166857582464. Its totient is φ = 31912984966400.

The previous prime is 47997245881489. The next prime is 47997245881573. The reversal of 47997245881509 is 90518854279974.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 47997245881509 - 2⁷ = 47997245881381 is a prime.

It is a super-2 number, since 2×47997245881509² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47997245881589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8503632 + ... + 12973289.

It is an arithmetic number, because the mean of its divisors is an integer number (4010428598904).

Almost surely, 2^{47997245881509} is an apocalyptic number.

It is an amenable number.

47997245881509 is a deficient number, since it is larger than the sum of its proper divisors (16169611700955).

47997245881509 is a wasteful number, since it uses less digits than its factorization.

47997245881509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21478908.

The product of its (nonzero) digits is 1828915200, while the sum is 78.

The spelling of 47997245881509 in words is "forty-seven trillion, nine hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-one thousand, five hundred nine".