47121215377 has 4 divisors (see below), whose sum is σ = 47135364976. Its totient is φ = 47107065780.

The previous prime is 47121215371. The next prime is 47121215381. The reversal of 47121215377 is 77351212174.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47121215377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47121215371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7069803 + ... + 7076464.

It is an arithmetic number, because the mean of its divisors is an integer number (11783841244).

Almost surely, 2^47121215377 is an apocalyptic number.

It is an amenable number.

47121215377 is a deficient number, since it is larger than the sum of its proper divisors (14149599).

47121215377 is a wasteful number, since it uses less digits than its factorization.

47121215377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14149598.

The product of its digits is 82320, while the sum is 40.

The spelling of 47121215377 in words is "forty-seven billion, one hundred twenty-one million, two hundred fifteen thousand, three hundred seventy-seven".