454829870720978 has 4 divisors (see below), whose sum is σ = 682244806081470. Its totient is φ = 227414935360488.

The previous prime is 454829870720933. The next prime is 454829870720989. The reversal of 454829870720978 is 879027078928454.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 227415538571809 + 227414332149169 = 15080303^2 + 15080263^2 .

It is a super-2 number, since 2×454829870720978² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113707467680243 + ... + 113707467680246.

Almost surely, 2^{454829870720978} is an apocalyptic number.

454829870720978 is a deficient number, since it is larger than the sum of its proper divisors (227414935360492).

454829870720978 is a wasteful number, since it uses less digits than its factorization.

454829870720978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227414935360491.

The product of its (nonzero) digits is 4551966720, while the sum is 80.

The spelling of 454829870720978 in words is "four hundred fifty-four trillion, eight hundred twenty-nine billion, eight hundred seventy million, seven hundred twenty thousand, nine hundred seventy-eight".