1156056651620 has 48 divisors (see below), whose sum is σ = 2643842663280. Its totient is φ = 422055591936.

The previous prime is 1156056651569. The next prime is 1156056651637. The reversal of 1156056651620 is 261566506511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 33524877604 + 1122531774016 = 183098^2 + 1059496^2 .

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, 24956477 + ... + 25002756.

It is an arithmetic number, because the mean of its divisors is an integer number (55080055485).

Almost surely, 2^{1156056651620} is an apocalyptic number.

1156056651620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156056651620 is an abundant number, since it is smaller than the sum of its proper divisors (1487786011660).

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

1156056651620 is a wasteful number, since it uses less digits than its factorization.

1156056651620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49959344 (or 49959342 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 1156056651620 in words is "one trillion, one hundred fifty-six billion, fifty-six million, six hundred fifty-one thousand, six hundred twenty".