1161262455542 has 8 divisors (see below), whose sum is σ = 1990735638096. Its totient is φ = 497683909512.

The previous prime is 1161262455491. The next prime is 1161262455547. The reversal of 1161262455542 is 2455542621611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1161262455493 and 1161262455502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161262455547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41473659113 + ... + 41473659140.

It is an arithmetic number, because the mean of its divisors is an integer number (248841954762).

Almost surely, 2^{1161262455542} is an apocalyptic number.

1161262455542 is a deficient number, since it is larger than the sum of its proper divisors (829473182554).

1161262455542 is an equidigital number, since it uses as much as digits as its factorization.

1161262455542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82947318262.

The product of its digits is 576000, while the sum is 44.

The spelling of 1161262455542 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-two million, four hundred fifty-five thousand, five hundred forty-two".