1722056006520 has 48 divisors (see below), whose sum is σ = 5596682022360. Its totient is φ = 459214934976.

The previous prime is 1722056006479. The next prime is 1722056006543. The reversal of 1722056006520 is 256006502271.

1722056006520 is a `hidden beast` number, since 1 + 7 + 2 + 20 + 5 + 600 + 6 + 5 + 20 = 666.

It is a super-2 number, since 2×1722056006520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 2391744094 + ... + 2391744813.

Almost surely, 2^{1722056006520} is an apocalyptic number.

1722056006520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1722056006520 is an abundant number, since it is smaller than the sum of its proper divisors (3874626015840).

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

1722056006520 is a wasteful number, since it uses less digits than its factorization.

1722056006520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783488924 (or 4783488917 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 1722056006520 in words is "one trillion, seven hundred twenty-two billion, fifty-six million, six thousand, five hundred twenty".