1156402052140 has 96 divisors (see below), whose sum is σ = 2530459008000. Its totient is φ = 443587802112.

The previous prime is 1156402052087. The next prime is 1156402052147. The reversal of 1156402052140 is 412502046511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1156402052147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12113716 + ... + 12208804.

It is an arithmetic number, because the mean of its divisors is an integer number (26358948000).

Almost surely, 2^{1156402052140} is an apocalyptic number.

1156402052140 is a gapful number since it is divisible by the number (10) 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 1156402052140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265229504000).

1156402052140 is an abundant number, since it is smaller than the sum of its proper divisors (1374056955860).

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

1156402052140 is a wasteful number, since it uses less digits than its factorization.

1156402052140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95399 (or 95397 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1156402052140 its reverse (412502046511), we get a palindrome (1568904098651).

The spelling of 1156402052140 in words is "one trillion, one hundred fifty-six billion, four hundred two million, fifty-two thousand, one hundred forty".