1161261613532 has 24 divisors (see below), whose sum is σ = 2054992327920. Its totient is φ = 574141011840.

The previous prime is 1161261613531. The next prime is 1161261613537. The reversal of 1161261613532 is 2353161621611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161261613531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2276057 + ... + 2739152.

It is an arithmetic number, because the mean of its divisors is an integer number (85624680330).

Almost surely, 2^{1161261613532} is an apocalyptic number.

It is an amenable number.

1161261613532 is a deficient number, since it is larger than the sum of its proper divisors (893730714388).

1161261613532 is a wasteful number, since it uses less digits than its factorization.

1161261613532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015861 (or 5015859 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The spelling of 1161261613532 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-one million, six hundred thirteen thousand, five hundred thirty-two".