2574782090381 has 4 divisors (see below), whose sum is σ = 2576657388252. Its totient is φ = 2572906792512.

The previous prime is 2574782090371. The next prime is 2574782090429. The reversal of 2574782090381 is 1830902874752.

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 2390255142025 + 184526948356 = 1546045^2 + 429566^2 .

It is a cyclic number.

It is not a de Polignac number, because 2574782090381 - 2²² = 2574777896077 is a prime.

It is a super-2 number, since 2×2574782090381² (a number of 26 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 (2574782090311) 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, 937646876 + ... + 937649621.

It is an arithmetic number, because the mean of its divisors is an integer number (644164347063).

Almost surely, 2^{2574782090381} is an apocalyptic number.

It is an amenable number.

2574782090381 is a deficient number, since it is larger than the sum of its proper divisors (1875297871).

2574782090381 is a wasteful number, since it uses less digits than its factorization.

2574782090381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875297870.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 2574782090381 in words is "two trillion, five hundred seventy-four billion, seven hundred eighty-two million, ninety thousand, three hundred eighty-one".