1406645251652 has 24 divisors (see below), whose sum is σ = 2521844643192. Its totient is φ = 686120601600.

The previous prime is 1406645251639. The next prime is 1406645251657. The reversal of 1406645251652 is 2561525466041.

It can be written as a sum of positive squares in 4 ways, for example, as 19606720576 + 1387038531076 = 140024^2 + 1177726^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1406645251597 and 1406645251606.

It is not an unprimeable number, because it can be changed into a prime (1406645251657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121452 + ... + 2704412.

It is an arithmetic number, because the mean of its divisors is an integer number (105076860133).

Almost surely, 2^{1406645251652} is an apocalyptic number.

It is an amenable number.

1406645251652 is a deficient number, since it is larger than the sum of its proper divisors (1115199391540).

1406645251652 is a wasteful number, since it uses less digits than its factorization.

1406645251652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597719 (or 597717 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 1406645251652 in words is "one trillion, four hundred six billion, six hundred forty-five million, two hundred fifty-one thousand, six hundred fifty-two".