1251534401432 has 16 divisors (see below), whose sum is σ = 2681859431760. Its totient is φ = 536371886304.

The previous prime is 1251534401413. The next prime is 1251534401449. The reversal of 1251534401432 is 2341044351521.

It is a junction number, because it is equal to n+sod(n) for n = 1251534401392 and 1251534401401.

It is a congruent number.

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, 11174414243 + ... + 11174414354.

It is an arithmetic number, because the mean of its divisors is an integer number (167616214485).

Almost surely, 2^{1251534401432} is an apocalyptic number.

It is an amenable number.

1251534401432 is an abundant number, since it is smaller than the sum of its proper divisors (1430325030328).

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

1251534401432 is a wasteful number, since it uses less digits than its factorization.

1251534401432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22348828610 (or 22348828606 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 1251534401432 its reverse (2341044351521), we get a palindrome (3592578752953).

The spelling of 1251534401432 in words is "one trillion, two hundred fifty-one billion, five hundred thirty-four million, four hundred one thousand, four hundred thirty-two".