1057121988738 has 8 divisors (see below), whose sum is σ = 2114243977488. Its totient is φ = 352373996244.

The previous prime is 1057121988697. The next prime is 1057121988743. The reversal of 1057121988738 is 8378891217501.

It is a sphenic number, since it is the product of 3 distinct primes.

1057121988738 is an admirable number.

It is a super-2 number, since 2×1057121988738² (a number of 25 digits) contains 22 as substring.

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, 88093499056 + ... + 88093499067.

It is an arithmetic number, because the mean of its divisors is an integer number (264280497186).

Almost surely, 2^{1057121988738} is an apocalyptic number.

1057121988738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1057121988738 is a wasteful number, since it uses less digits than its factorization.

1057121988738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176186998128.

The product of its (nonzero) digits is 6773760, while the sum is 60.

The spelling of 1057121988738 in words is "one trillion, fifty-seven billion, one hundred twenty-one million, nine hundred eighty-eight thousand, seven hundred thirty-eight".