1561613133000 has 64 divisors (see below), whose sum is σ = 4872232984320. Its totient is φ = 416430168000.

The previous prime is 1561613132971. The next prime is 1561613133053. The reversal of 1561613133000 is 3313161651.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260265856 + ... + 260271855.

It is an arithmetic number, because the mean of its divisors is an integer number (76128640380).

Almost surely, 2^{1561613133000} is an apocalyptic number.

1561613133000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561613133000 is an abundant number, since it is smaller than the sum of its proper divisors (3310619851320).

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

1561613133000 is a wasteful number, since it uses less digits than its factorization.

1561613133000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520537735 (or 520537721 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

Adding to 1561613133000 its reverse (3313161651), we get a palindrome (1564926294651).

The spelling of 1561613133000 in words is "one trillion, five hundred sixty-one billion, six hundred thirteen million, one hundred thirty-three thousand".