10251321530 has 16 divisors (see below), whose sum is σ = 18486122400. Its totient is φ = 4093030032.

The previous prime is 10251321497. The next prime is 10251321571. The reversal of 10251321530 is 3512315201.

It is a happy number.

It is a super-2 number, since 2×10251321530² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10251321496 and 10251321505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931580 + ... + 942519.

It is an arithmetic number, because the mean of its divisors is an integer number (1155382650).

Almost surely, 2^10251321530 is an apocalyptic number.

10251321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10251321530 is a deficient number, since it is larger than the sum of its proper divisors (8234800870).

10251321530 is a wasteful number, since it uses less digits than its factorization.

10251321530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874653.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 10251321530 its reverse (3512315201), we get a palindrome (13763636731).

The spelling of 10251321530 in words is "ten billion, two hundred fifty-one million, three hundred twenty-one thousand, five hundred thirty".