47172380257021 has 8 divisors (see below), whose sum is σ = 48176167722624. Its totient is φ = 46168597783200.

The previous prime is 47172380257001. The next prime is 47172380257061. The reversal of 47172380257021 is 12075208327174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47172380257021 - 2¹⁵ = 47172380224253 is a prime.

It is a super-2 number, since 2×47172380257021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47172380257001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22685001 + ... + 24676993.

It is an arithmetic number, because the mean of its divisors is an integer number (6022020965328).

Almost surely, 2^{47172380257021} is an apocalyptic number.

It is an amenable number.

47172380257021 is a deficient number, since it is larger than the sum of its proper divisors (1003787465603).

47172380257021 is a wasteful number, since it uses less digits than its factorization.

47172380257021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495891.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 47172380257021 in words is "forty-seven trillion, one hundred seventy-two billion, three hundred eighty million, two hundred fifty-seven thousand, twenty-one".