195139670040 has 384 divisors, whose sum is σ = 800811048960. Its totient is φ = 40154222592.

The previous prime is 195139670029. The next prime is 195139670053. The reversal of 195139670040 is 40076931591.

195139670040 is a `hidden beast` number, since 1 + 9 + 513 + 96 + 7 + 0 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 886297 + ... + 1084343.

It is an arithmetic number, because the mean of its divisors is an integer number (2085445440).

Almost surely, 2^195139670040 is an apocalyptic number.

195139670040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195139670040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400405524480).

195139670040 is an abundant number, since it is smaller than the sum of its proper divisors (605671378920).

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

195139670040 is a wasteful number, since it uses less digits than its factorization.

195139670040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198111 (or 198104 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 195139670040 in words is "one hundred ninety-five billion, one hundred thirty-nine million, six hundred seventy thousand, forty".