134257902405 has 64 divisors (see below), whose sum is σ = 240582721536. Its totient is φ = 63375488000.

The previous prime is 134257902403. The next prime is 134257902413. The reversal of 134257902405 is 504209752431.

It is a happy number.

It is not a de Polignac number, because 134257902405 - 2¹ = 134257902403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134257902403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1435885 + ... + 1526525.

It is an arithmetic number, because the mean of its divisors is an integer number (3759105024).

Almost surely, 2^134257902405 is an apocalyptic number.

134257902405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134257902405 is a deficient number, since it is larger than the sum of its proper divisors (106324819131).

134257902405 is a wasteful number, since it uses less digits than its factorization.

134257902405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90898.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 134257902405 in words is "one hundred thirty-four billion, two hundred fifty-seven million, nine hundred two thousand, four hundred five".