148978545693 has 16 divisors (see below), whose sum is σ = 198850294080. Its totient is φ = 99212978304.

The previous prime is 148978545689. The next prime is 148978545733. The reversal of 148978545693 is 396545879841.

It is not a de Polignac number, because 148978545693 - 2² = 148978545689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148978545613) 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, 12364530 + ... + 12376572.

It is an arithmetic number, because the mean of its divisors is an integer number (12428143380).

Almost surely, 2^148978545693 is an apocalyptic number.

It is an amenable number.

148978545693 is a deficient number, since it is larger than the sum of its proper divisors (49871748387).

148978545693 is a wasteful number, since it uses less digits than its factorization.

148978545693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16108.

The product of its digits is 261273600, while the sum is 69.

The spelling of 148978545693 in words is "one hundred forty-eight billion, nine hundred seventy-eight million, five hundred forty-five thousand, six hundred ninety-three".