1356404015642 has 32 divisors (see below), whose sum is σ = 2215462732560. Its totient is φ = 619097955840.

The previous prime is 1356404015639. The next prime is 1356404015663. The reversal of 1356404015642 is 2465104046531.

It can be written as a sum of positive squares in 8 ways, for example, as 653088643321 + 703315372321 = 808139^2 + 838639^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1356404015642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017188 + ... + 1935840.

Almost surely, 2^{1356404015642} is an apocalyptic number.

1356404015642 is a deficient number, since it is larger than the sum of its proper divisors (859058716918).

1356404015642 is a wasteful number, since it uses less digits than its factorization.

1356404015642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919298.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 1356404015642 in words is "one trillion, three hundred fifty-six billion, four hundred four million, fifteen thousand, six hundred forty-two".