42947479065 has 32 divisors (see below), whose sum is σ = 73048809600. Its totient is φ = 21484915200.

The previous prime is 42947479051. The next prime is 42947479067. The reversal of 42947479065 is 56097474924.

It is not a de Polignac number, because 42947479065 - 2⁵ = 42947479033 is a prime.

It is a super-2 number, since 2×42947479065² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 42947478996 and 42947479014.

It is not an unprimeable number, because it can be changed into a prime (42947479067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 717220 + ... + 774789.

It is an arithmetic number, because the mean of its divisors is an integer number (2282775300).

Almost surely, 2^42947479065 is an apocalyptic number.

It is an amenable number.

42947479065 is a deficient number, since it is larger than the sum of its proper divisors (30101330535).

42947479065 is a wasteful number, since it uses less digits than its factorization.

42947479065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492137.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 42947479065 in words is "forty-two billion, nine hundred forty-seven million, four hundred seventy-nine thousand, sixty-five".