1201765855670 has 16 divisors (see below), whose sum is σ = 2175263339760. Its totient is φ = 478020831264.

The previous prime is 1201765855649. The next prime is 1201765855681. The reversal of 1201765855670 is 765585671021.

It is a super-2 number, since 2×1201765855670² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335686997 + ... + 335690576.

It is an arithmetic number, because the mean of its divisors is an integer number (135953958735).

Almost surely, 2^{1201765855670} is an apocalyptic number.

1201765855670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201765855670 is a deficient number, since it is larger than the sum of its proper divisors (973497484090).

1201765855670 is a wasteful number, since it uses less digits than its factorization.

1201765855670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671377759.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 1201765855670 in words is "one trillion, two hundred one billion, seven hundred sixty-five million, eight hundred fifty-five thousand, six hundred seventy".