1349154357978 has 16 divisors (see below), whose sum is σ = 3083781389760. Its totient is φ = 385472673696.

The previous prime is 1349154357923. The next prime is 1349154358039. The reversal of 1349154357978 is 8797534519431.

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, 16061361363 + ... + 16061361446.

It is an arithmetic number, because the mean of its divisors is an integer number (192736336860).

Almost surely, 2^{1349154357978} is an apocalyptic number.

1349154357978 is an abundant number, since it is smaller than the sum of its proper divisors (1734627031782).

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

1349154357978 is a wasteful number, since it uses less digits than its factorization.

1349154357978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32122722821.

The product of its digits is 114307200, while the sum is 66.

The spelling of 1349154357978 in words is "one trillion, three hundred forty-nine billion, one hundred fifty-four million, three hundred fifty-seven thousand, nine hundred seventy-eight".