2455790245778 has 4 divisors (see below), whose sum is σ = 3683685368670. Its totient is φ = 1227895122888.

The previous prime is 2455790245759. The next prime is 2455790245787. The reversal of 2455790245778 is 8775420975542.

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., 1255356662329 + 1200433583449 = 1120427^2 + 1095643^2 .

It is a super-6 number, since 6×2455790245778⁶ (a number of 76 digits) contains 666666 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613947561443 + ... + 613947561446.

Almost surely, 2^{2455790245778} is an apocalyptic number.

2455790245778 is a deficient number, since it is larger than the sum of its proper divisors (1227895122892).

2455790245778 is a wasteful number, since it uses less digits than its factorization.

2455790245778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227895122891.

The product of its (nonzero) digits is 197568000, while the sum is 65.

The spelling of 2455790245778 in words is "two trillion, four hundred fifty-five billion, seven hundred ninety million, two hundred forty-five thousand, seven hundred seventy-eight".