1107021351557 has 4 divisors (see below), whose sum is σ = 1207659656256. Its totient is φ = 1006383046860.

The previous prime is 1107021351551. The next prime is 1107021351571. The reversal of 1107021351557 is 7551531207011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1107021351557 - 2³² = 1102726384261 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 1107021351557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1107021351551) 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, 50319152333 + ... + 50319152354.

It is an arithmetic number, because the mean of its divisors is an integer number (301914914064).

Almost surely, 2^{1107021351557} is an apocalyptic number.

It is an amenable number.

1107021351557 is a deficient number, since it is larger than the sum of its proper divisors (100638304699).

1107021351557 is a wasteful number, since it uses less digits than its factorization.

1107021351557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100638304698.

The product of its (nonzero) digits is 36750, while the sum is 38.

Adding to 1107021351557 its reverse (7551531207011), we get a palindrome (8658552558568).

The spelling of 1107021351557 in words is "one trillion, one hundred seven billion, twenty-one million, three hundred fifty-one thousand, five hundred fifty-seven".