153766779138 has 40 divisors (see below), whose sum is σ = 393773130432. Its totient is φ = 43933365144.

The previous prime is 153766779137. The next prime is 153766779241. The reversal of 153766779138 is 831977667351.

It is a happy number.

153766779138 is a `hidden beast` number, since 1 + 5 + 376 + 67 + 79 + 138 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (153766779137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67797270 + ... + 67799537.

Almost surely, 2^153766779138 is an apocalyptic number.

153766779138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

153766779138 is an abundant number, since it is smaller than the sum of its proper divisors (240006351294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153766779138 is a wasteful number, since it uses less digits than its factorization.

153766779138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135596828 (or 135596819 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 153766779138 in words is "one hundred fifty-three billion, seven hundred sixty-six million, seven hundred seventy-nine thousand, one hundred thirty-eight".