553377951978 has 48 divisors (see below), whose sum is σ = 1176946990464. Its totient is φ = 173422978560.

The previous prime is 553377951953. The next prime is 553377952009. The reversal of 553377951978 is 879159773355.

553377951978 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×553377951978² (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 23 ways as a sum of consecutive naturals, for example, 1454463 + ... + 1795053.

It is an arithmetic number, because the mean of its divisors is an integer number (24519728968).

Almost surely, 2^553377951978 is an apocalyptic number.

553377951978 is an abundant number, since it is smaller than the sum of its proper divisors (623569038486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

553377951978 is a wasteful number, since it uses less digits than its factorization.

553377951978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341567 (or 341550 counting only the distinct ones).

The product of its digits is 250047000, while the sum is 69.

The spelling of 553377951978 in words is "five hundred fifty-three billion, three hundred seventy-seven million, nine hundred fifty-one thousand, nine hundred seventy-eight".