555932560978 has 4 divisors (see below), whose sum is σ = 833898841470. Its totient is φ = 277966280488.

The previous prime is 555932560969. The next prime is 555932561039. The reversal of 555932560978 is 879065239555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879065239555 = 5 ⋅175813047911.

It can be written as a sum of positive squares in only one way, i.e., 290453089969 + 265479471009 = 538937^2 + 515247^2 .

It is a super-2 number, since 2×555932560978² (a number of 24 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, 138983140243 + ... + 138983140246.

Almost surely, 2^555932560978 is an apocalyptic number.

555932560978 is a deficient number, since it is larger than the sum of its proper divisors (277966280492).

555932560978 is a wasteful number, since it uses less digits than its factorization.

555932560978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277966280491.

The product of its (nonzero) digits is 102060000, while the sum is 64.

The spelling of 555932560978 in words is "five hundred fifty-five billion, nine hundred thirty-two million, five hundred sixty thousand, nine hundred seventy-eight".