245475941943664 has 20 divisors (see below), whose sum is σ = 479818572364656. Its totient is φ = 121651794236672.

The previous prime is 245475941943649. The next prime is 245475941943677. The reversal of 245475941943664 is 466349149574542.

It is a super-2 number, since 2×245475941943664² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 67886044084 + ... + 67886047699.

Almost surely, 2^{245475941943664} is an apocalyptic number.

It is an amenable number.

245475941943664 is a deficient number, since it is larger than the sum of its proper divisors (234342630420992).

245475941943664 is a wasteful number, since it uses less digits than its factorization.

245475941943664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135772091904 (or 135772091898 counting only the distinct ones).

The product of its digits is 3135283200, while the sum is 73.

The spelling of 245475941943664 in words is "two hundred forty-five trillion, four hundred seventy-five billion, nine hundred forty-one million, nine hundred forty-three thousand, six hundred sixty-four".