345177781069 has 16 divisors (see below), whose sum is σ = 398765877120. Its totient is φ = 295296424960.

The previous prime is 345177781063. The next prime is 345177781073. The reversal of 345177781069 is 960187771543.

It is a cyclic number.

It is not a de Polignac number, because 345177781069 - 2⁹ = 345177780557 is a prime.

It is a super-2 number, since 2×345177781069² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345177781063) 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, 1193397 + ... + 1454149.

It is an arithmetic number, because the mean of its divisors is an integer number (24922867320).

Almost surely, 2^345177781069 is an apocalyptic number.

It is an amenable number.

345177781069 is a deficient number, since it is larger than the sum of its proper divisors (53588096051).

345177781069 is a wasteful number, since it uses less digits than its factorization.

345177781069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267860.

The product of its (nonzero) digits is 8890560, while the sum is 58.

Multiplying 345177781069 by its sum of digits (58), we get a palindrome (20020311302002).

The spelling of 345177781069 in words is "three hundred forty-five billion, one hundred seventy-seven million, seven hundred eighty-one thousand, sixty-nine".