1061506551616 has 56 divisors (see below), whose sum is σ = 2408826491456. Its totient is φ = 454651453440.

The previous prime is 1061506551593. The next prime is 1061506551649. The reversal of 1061506551616 is 6161556051601.

1061506551616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1061506551616² (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 7 ways as a sum of consecutive naturals, for example, 736 + ... + 1457056.

It is an arithmetic number, because the mean of its divisors is an integer number (43014758776).

Almost surely, 2^{1061506551616} is an apocalyptic number.

1061506551616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1061506551616 is an abundant number, since it is smaller than the sum of its proper divisors (1347319939840).

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

1061506551616 is a wasteful number, since it uses less digits than its factorization.

1061506551616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457967 (or 1457957 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1061506551616 in words is "one trillion, sixty-one billion, five hundred six million, five hundred fifty-one thousand, six hundred sixteen".