1561619706192 has 960 divisors, whose sum is σ = 5798391545856. Its totient is φ = 395784714240.

The previous prime is 1561619706067. The next prime is 1561619706221. The reversal of 1561619706192 is 2916079161651.

1561619706192 is a `hidden beast` number, since 1 + 5 + 6 + 1 + 6 + 19 + 7 + 0 + 619 + 2 = 666.

It is a super-2 number, since 2×1561619706192² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1897471893 + ... + 1897472715.

Almost surely, 2^{1561619706192} is an apocalyptic number.

1561619706192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1561619706192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2899195772928).

1561619706192 is an abundant number, since it is smaller than the sum of its proper divisors (4236771839664).

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

1561619706192 is a wasteful number, since it uses less digits than its factorization.

1561619706192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 1561619706192 in words is "one trillion, five hundred sixty-one billion, six hundred nineteen million, seven hundred six thousand, one hundred ninety-two".