346223496978 has 54 divisors (see below), whose sum is σ = 754224121287. Its totient is φ = 114784563960.

The previous prime is 346223496973. The next prime is 346223496979. The reversal of 346223496978 is 879694322643.

346223496978 is a `hidden beast` number, since 3 + 462 + 2 + 3 + 49 + 69 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 173111748489 + 173111748489 = 416067^2 + 416067^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=416067.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (346223496973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 826308853 + ... + 826309271.

Almost surely, 2^346223496978 is an apocalyptic number.

346223496978 is an abundant number, since it is smaller than the sum of its proper divisors (408000624309).

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

346223496978 is an frugal number, since it uses more digits than its factorization.

346223496978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 755 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 346223496978 in words is "three hundred forty-six billion, two hundred twenty-three million, four hundred ninety-six thousand, nine hundred seventy-eight".