1187936842722 has 64 divisors (see below), whose sum is σ = 2768059699200. Its totient is φ = 332841732480.

The previous prime is 1187936842711. The next prime is 1187936842739. The reversal of 1187936842722 is 2272486397811.

It is a super-2 number, since 2×1187936842722² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427447 + ... + 1599557.

It is an arithmetic number, because the mean of its divisors is an integer number (43250932800).

Almost surely, 2^{1187936842722} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1187936842722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384029849600).

1187936842722 is an abundant number, since it is smaller than the sum of its proper divisors (1580122856478).

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

1187936842722 is a wasteful number, since it uses less digits than its factorization.

1187936842722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172591.

The product of its digits is 16257024, while the sum is 60.

The spelling of 1187936842722 in words is "one trillion, one hundred eighty-seven billion, nine hundred thirty-six million, eight hundred forty-two thousand, seven hundred twenty-two".