1061216546640 has 40 divisors (see below), whose sum is σ = 3289771295328. Its totient is φ = 282991079040.

The previous prime is 1061216546633. The next prime is 1061216546653. The reversal of 1061216546640 is 466456121601.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1061216546640² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061216546592 and 1061216546601.

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, 2210867566 + ... + 2210868045.

Almost surely, 2^{1061216546640} is an apocalyptic number.

1061216546640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061216546640 is an abundant number, since it is smaller than the sum of its proper divisors (2228554748688).

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

1061216546640 is a wasteful number, since it uses less digits than its factorization.

1061216546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421735627 (or 4421735621 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 1061216546640 in words is "one trillion, sixty-one billion, two hundred sixteen million, five hundred forty-six thousand, six hundred forty".