1205157379056 has 160 divisors (see below), whose sum is σ = 3312150175488. Its totient is φ = 377091348480.

The previous prime is 1205157379043. The next prime is 1205157379057. The reversal of 1205157379056 is 6509737515021.

It is a super-2 number, since 2×1205157379056² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205157379057) 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, 5563530 + ... + 5776086.

Almost surely, 2^{1205157379056} is an apocalyptic number.

1205157379056 is a gapful number since it is divisible by the number (16) 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 1205157379056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656075087744).

1205157379056 is an abundant number, since it is smaller than the sum of its proper divisors (2106992796432).

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

1205157379056 is a wasteful number, since it uses less digits than its factorization.

1205157379056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212719 (or 212713 counting only the distinct ones).

The product of its (nonzero) digits is 1984500, while the sum is 51.

The spelling of 1205157379056 in words is "one trillion, two hundred five billion, one hundred fifty-seven million, three hundred seventy-nine thousand, fifty-six".