3477661521377 has 2 divisors, whose sum is σ = 3477661521378. Its totient is φ = 3477661521376.

The previous prime is 3477661521253. The next prime is 3477661521437. The reversal of 3477661521377 is 7731251667743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3474529552081 + 3131969296 = 1864009^2 + 55964^2 .

It is an emirp because it is prime and its reverse (7731251667743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3477661521377 - 2⁸ = 3477661521121 is a prime.

It is a super-2 number, since 2×3477661521377² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3477661821377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738830760688 + 1738830760689.

It is an arithmetic number, because the mean of its divisors is an integer number (1738830760689).

Almost surely, 2^{3477661521377} is an apocalyptic number.

It is an amenable number.

3477661521377 is a deficient number, since it is larger than the sum of its proper divisors (1).

3477661521377 is an equidigital number, since it uses as much as digits as its factorization.

3477661521377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31116960, while the sum is 59.

The spelling of 3477661521377 in words is "three trillion, four hundred seventy-seven billion, six hundred sixty-one million, five hundred twenty-one thousand, three hundred seventy-seven".