2021638487348 has 12 divisors (see below), whose sum is σ = 3537896907552. Its totient is φ = 1010810799480.

The previous prime is 2021638487329. The next prime is 2021638487377. The reversal of 2021638487348 is 8437848361202.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2021638487293 and 2021638487302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556168 + ... + 2542623.

It is an arithmetic number, because the mean of its divisors is an integer number (294824742296).

Almost surely, 2^{2021638487348} is an apocalyptic number.

It is an amenable number.

2021638487348 is a deficient number, since it is larger than the sum of its proper divisors (1516258420204).

2021638487348 is a wasteful number, since it uses less digits than its factorization.

2021638487348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222102 (or 4222100 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 2021638487348 in words is "two trillion, twenty-one billion, six hundred thirty-eight million, four hundred eighty-seven thousand, three hundred forty-eight".