83778195132 has 24 divisors (see below), whose sum is σ = 217202728400. Its totient is φ = 27926065008.

The previous prime is 83778195121. The next prime is 83778195143. The reversal of 83778195132 is 23159187738.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83778195121) and next prime (83778195143).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387861907 + ... + 387862122.

Almost surely, 2^83778195132 is an apocalyptic number.

It is an amenable number.

83778195132 is an abundant number, since it is smaller than the sum of its proper divisors (133424533268).

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

83778195132 is a wasteful number, since it uses less digits than its factorization.

83778195132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775724042 (or 775724034 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 83778195132 in words is "eighty-three billion, seven hundred seventy-eight million, one hundred ninety-five thousand, one hundred thirty-two".