138280386454 has 64 divisors (see below), whose sum is σ = 249020651520. Its totient is φ = 56347850880.

The previous prime is 138280386421. The next prime is 138280386457. The reversal of 138280386454 is 454683082831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138280386457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17257309 + ... + 17265319.

It is an arithmetic number, because the mean of its divisors is an integer number (3890947680).

Almost surely, 2^138280386454 is an apocalyptic number.

138280386454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138280386454 is a deficient number, since it is larger than the sum of its proper divisors (110740265066).

138280386454 is a wasteful number, since it uses less digits than its factorization.

138280386454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813.

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 138280386454 in words is "one hundred thirty-eight billion, two hundred eighty million, three hundred eighty-six thousand, four hundred fifty-four".