245864822978 has 8 divisors (see below), whose sum is σ = 372448692540. Its totient is φ = 121715258800.

The previous prime is 245864822927. The next prime is 245864823007. The reversal of 245864822978 is 879228468542.

It can be written as a sum of positive squares in 2 ways, for example, as 245576740249 + 288082729 = 495557^2 + 16973^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×245864822978² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608576093 + ... + 608576496.

Almost surely, 2^245864822978 is an apocalyptic number.

245864822978 is a deficient number, since it is larger than the sum of its proper divisors (126583869562).

245864822978 is a wasteful number, since it uses less digits than its factorization.

245864822978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217152692.

The product of its digits is 123863040, while the sum is 65.

The spelling of 245864822978 in words is "two hundred forty-five billion, eight hundred sixty-four million, eight hundred twenty-two thousand, nine hundred seventy-eight".