1371472346021 has 4 divisors (see below), whose sum is σ = 1372128869100. Its totient is φ = 1370815822944.

The previous prime is 1371472345973. The next prime is 1371472346093. The reversal of 1371472346021 is 1206432741731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541622402500 + 829849943521 = 735950^2 + 910961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371472346021 - 2²² = 1371468151717 is a prime.

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 1371472346021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371472246021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328258406 + ... + 328262583.

It is an arithmetic number, because the mean of its divisors is an integer number (343032217275).

Almost surely, 2^{1371472346021} is an apocalyptic number.

It is an amenable number.

1371472346021 is a deficient number, since it is larger than the sum of its proper divisors (656523079).

1371472346021 is an equidigital number, since it uses as much as digits as its factorization.

1371472346021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656523078.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 1371472346021 in words is "one trillion, three hundred seventy-one billion, four hundred seventy-two million, three hundred forty-six thousand, twenty-one".