1097716261438 has 4 divisors (see below), whose sum is σ = 1646574392160. Its totient is φ = 548858130718.

The previous prime is 1097716261429. The next prime is 1097716261441. The reversal of 1097716261438 is 8341626177901.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274429065358 + ... + 274429065361.

It is an arithmetic number, because the mean of its divisors is an integer number (411643598040).

Almost surely, 2^{1097716261438} is an apocalyptic number.

1097716261438 is a deficient number, since it is larger than the sum of its proper divisors (548858130722).

1097716261438 is an equidigital number, since it uses as much as digits as its factorization.

1097716261438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548858130721.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 1097716261438 in words is "one trillion, ninety-seven billion, seven hundred sixteen million, two hundred sixty-one thousand, four hundred thirty-eight".