10357121491 has 2 divisors, whose sum is σ = 10357121492. Its totient is φ = 10357121490.

The previous prime is 10357121471. The next prime is 10357121527. The reversal of 10357121491 is 19412175301.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19412175301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10357121491 - 2⁵ = 10357121459 is a prime.

It is a super-3 number, since 3×10357121491³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10357121441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5178560745 + 5178560746.

It is an arithmetic number, because the mean of its divisors is an integer number (5178560746).

Almost surely, 2^10357121491 is an apocalyptic number.

10357121491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10357121491 is an equidigital number, since it uses as much as digits as its factorization.

10357121491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

Adding to 10357121491 its reverse (19412175301), we get a palindrome (29769296792).

The spelling of 10357121491 in words is "ten billion, three hundred fifty-seven million, one hundred twenty-one thousand, four hundred ninety-one".