1018442778552 has 48 divisors (see below), whose sum is σ = 2761995029040. Its totient is φ = 339024002688.

The previous prime is 1018442778499. The next prime is 1018442778589. The reversal of 1018442778552 is 2558772448101.

1018442778552 is a `hidden beast` number, since 1 + 0 + 1 + 8 + 442 + 77 + 85 + 52 = 666.

It is a super-2 number, since 2×1018442778552² (a number of 25 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 11 ways as a sum of consecutive naturals, for example, 9465373 + ... + 9572364.

It is an arithmetic number, because the mean of its divisors is an integer number (57541563105).

Almost surely, 2^{1018442778552} is an apocalyptic number.

1018442778552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1018442778552 is an abundant number, since it is smaller than the sum of its proper divisors (1743552250488).

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

1018442778552 is a wasteful number, since it uses less digits than its factorization.

1018442778552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19038492 (or 19038485 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 54.

The spelling of 1018442778552 in words is "one trillion, eighteen billion, four hundred forty-two million, seven hundred seventy-eight thousand, five hundred fifty-two".