1977135989275 has 6 divisors (see below), whose sum is σ = 2451648626732. Its totient is φ = 1581708791400.

The previous prime is 1977135989219. The next prime is 1977135989351. The reversal of 1977135989275 is 5729895317791.

It is not a de Polignac number, because 1977135989275 - 2¹⁵ = 1977135956507 is a prime.

It is a super-3 number, since 3×1977135989275³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1977135989198 and 1977135989207.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39542719761 + ... + 39542719810.

Almost surely, 2^{1977135989275} is an apocalyptic number.

1977135989275 is a deficient number, since it is larger than the sum of its proper divisors (474512637457).

1977135989275 is an equidigital number, since it uses as much as digits as its factorization.

1977135989275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79085439581 (or 79085439576 counting only the distinct ones).

The product of its digits is 300056400, while the sum is 73.

The spelling of 1977135989275 in words is "one trillion, nine hundred seventy-seven billion, one hundred thirty-five million, nine hundred eighty-nine thousand, two hundred seventy-five".