1606506220740 has 96 divisors (see below), whose sum is σ = 4594332524544. Its totient is φ = 419249461120.

The previous prime is 1606506220717. The next prime is 1606506220741. The reversal of 1606506220740 is 470226056061.

It is a super-2 number, since 2×1606506220740² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1606506220741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47559337 + ... + 47593103.

It is an arithmetic number, because the mean of its divisors is an integer number (47857630464).

Almost surely, 2^{1606506220740} is an apocalyptic number.

1606506220740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606506220740 is an abundant number, since it is smaller than the sum of its proper divisors (2987826303804).

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

1606506220740 is a wasteful number, since it uses less digits than its factorization.

1606506220740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50697 (or 50695 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 1606506220740 in words is "one trillion, six hundred six billion, five hundred six million, two hundred twenty thousand, seven hundred forty".