1780607008121 has 16 divisors (see below), whose sum is σ = 1951550539776. Its totient is φ = 1617732539136.

The previous prime is 1780607008109. The next prime is 1780607008139. The reversal of 1780607008121 is 1218007060871.

It is a cyclic number.

It is not a de Polignac number, because 1780607008121 - 2¹⁰ = 1780607007097 is a prime.

It is a super-2 number, since 2×1780607008121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1780607008721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11065211 + ... + 11224976.

It is an arithmetic number, because the mean of its divisors is an integer number (121971908736).

Almost surely, 2^{1780607008121} is an apocalyptic number.

It is an amenable number.

1780607008121 is a deficient number, since it is larger than the sum of its proper divisors (170943531655).

1780607008121 is a wasteful number, since it uses less digits than its factorization.

1780607008121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290368.

The product of its (nonzero) digits is 37632, while the sum is 41.

The spelling of 1780607008121 in words is "one trillion, seven hundred eighty billion, six hundred seven million, eight thousand, one hundred twenty-one".