2378491474021 has 16 divisors (see below), whose sum is σ = 2581839253504. Its totient is φ = 2178059030784.

The previous prime is 2378491474001. The next prime is 2378491474057. The reversal of 2378491474021 is 1204741948732.

It is a happy number.

It is not a de Polignac number, because 2378491474021 - 2¹⁹ = 2378490949733 is a prime.

It is a super-3 number, since 3×2378491474021³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2378491474021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378491474001) 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, 21899176 + ... + 22007518.

It is an arithmetic number, because the mean of its divisors is an integer number (161364953344).

Almost surely, 2^{2378491474021} is an apocalyptic number.

It is an amenable number.

2378491474021 is a deficient number, since it is larger than the sum of its proper divisors (203347779483).

2378491474021 is a wasteful number, since it uses less digits than its factorization.

2378491474021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121780.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 2378491474021 in words is "two trillion, three hundred seventy-eight billion, four hundred ninety-one million, four hundred seventy-four thousand, twenty-one".