133778195964 has 72 divisors (see below), whose sum is σ = 392238607488. Its totient is φ = 37651854240.

The previous prime is 133778195951. The next prime is 133778195983. The reversal of 133778195964 is 469591877331.

133778195964 is a `hidden beast` number, since 1 + 3 + 37 + 7 + 8 + 1 + 9 + 596 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3944802 + ... + 3978569.

Almost surely, 2^133778195964 is an apocalyptic number.

133778195964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133778195964 is an abundant number, since it is smaller than the sum of its proper divisors (258460411524).

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

133778195964 is a wasteful number, since it uses less digits than its factorization.

133778195964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923455 (or 7923450 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 133778195964 in words is "one hundred thirty-three billion, seven hundred seventy-eight million, one hundred ninety-five thousand, nine hundred sixty-four".