136898505447 has 24 divisors (see below), whose sum is σ = 202620148080. Its totient is φ = 82147296000.

The previous prime is 136898505427. The next prime is 136898505461. The reversal of 136898505447 is 744505898631.

It is a happy number.

It is not a de Polignac number, because 136898505447 - 2⁶ = 136898505383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136898505407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1830322 + ... + 1903647.

It is an arithmetic number, because the mean of its divisors is an integer number (8442506170).

Almost surely, 2^136898505447 is an apocalyptic number.

136898505447 is a deficient number, since it is larger than the sum of its proper divisors (65721642633).

136898505447 is a wasteful number, since it uses less digits than its factorization.

136898505447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734095 (or 3734084 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 136898505447 in words is "one hundred thirty-six billion, eight hundred ninety-eight million, five hundred five thousand, four hundred forty-seven".