11723521607770 has 32 divisors (see below), whose sum is σ = 24677818247808. Its totient is φ = 3926016537408.

The previous prime is 11723521607761. The next prime is 11723521607783. The reversal of 11723521607770 is 7770612532711.

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, 1947425829 + ... + 1947431848.

It is an arithmetic number, because the mean of its divisors is an integer number (771181820244).

Almost surely, 2^{11723521607770} is an apocalyptic number.

11723521607770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11723521607770 is an abundant number, since it is smaller than the sum of its proper divisors (12954296640038).

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

11723521607770 is a wasteful number, since it uses less digits than its factorization.

11723521607770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894857734.

The product of its (nonzero) digits is 864360, while the sum is 49.

The spelling of 11723521607770 in words is "eleven trillion, seven hundred twenty-three billion, five hundred twenty-one million, six hundred seven thousand, seven hundred seventy".