123456778341 has 16 divisors (see below), whose sum is σ = 177471176064. Its totient is φ = 75887728704.

The previous prime is 123456778321. The next prime is 123456778343. The reversal of 123456778341 is 143877654321.

It is not a de Polignac number, because 123456778341 - 2⁵ = 123456778309 is a prime.

It is a super-2 number, since 2×123456778341² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123456778343) 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, 1749826 + ... + 1819011.

It is an arithmetic number, because the mean of its divisors is an integer number (11091948504).

Almost surely, 2^123456778341 is an apocalyptic number.

It is an amenable number.

123456778341 is a deficient number, since it is larger than the sum of its proper divisors (54014397723).

123456778341 is a wasteful number, since it uses less digits than its factorization.

123456778341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569740.

The product of its digits is 3386880, while the sum is 51.

The spelling of 123456778341 in words is "one hundred twenty-three billion, four hundred fifty-six million, seven hundred seventy-eight thousand, three hundred forty-one".