1245501551441 has 24 divisors (see below), whose sum is σ = 1552702818240. Its totient is φ = 993557692512.

The previous prime is 1245501551401. The next prime is 1245501551443. The reversal of 1245501551441 is 1441551055421.

It is not a de Polignac number, because 1245501551441 - 2⁶ = 1245501551377 is a prime.

It is a super-2 number, since 2×1245501551441² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1245501551395 and 1245501551404.

It is not an unprimeable number, because it can be changed into a prime (1245501551443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14892731 + ... + 14976128.

It is an arithmetic number, because the mean of its divisors is an integer number (64695950760).

Almost surely, 2^{1245501551441} is an apocalyptic number.

It is an amenable number.

1245501551441 is a deficient number, since it is larger than the sum of its proper divisors (307201266799).

1245501551441 is a wasteful number, since it uses less digits than its factorization.

1245501551441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29868933 (or 29868926 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 38.

The spelling of 1245501551441 in words is "one trillion, two hundred forty-five billion, five hundred one million, five hundred fifty-one thousand, four hundred forty-one".