374437580021 has 4 divisors (see below), whose sum is σ = 374481264972. Its totient is φ = 374393895072.

The previous prime is 374437579991. The next prime is 374437580047. The reversal of 374437580021 is 120085734473.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120085734473 = 41 ⋅2928920353.

It can be written as a sum of positive squares in 2 ways, for example, as 191506012996 + 182931567025 = 437614^2 + 427705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-374437580021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (374437586021) 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, 21829616 + ... + 21846761.

It is an arithmetic number, because the mean of its divisors is an integer number (93620316243).

Almost surely, 2^374437580021 is an apocalyptic number.

It is an amenable number.

374437580021 is a deficient number, since it is larger than the sum of its proper divisors (43684951).

374437580021 is an equidigital number, since it uses as much as digits as its factorization.

374437580021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43684950.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 374437580021 in words is "three hundred seventy-four billion, four hundred thirty-seven million, five hundred eighty thousand, twenty-one".