67640286492 has 48 divisors (see below), whose sum is σ = 175567150080. Its totient is φ = 22520605104.

The previous prime is 67640286481. The next prime is 67640286499. The reversal of 67640286492 is 29468204676.

67640286492 is a `hidden beast` number, since 6 + 76 + 4 + 0 + 2 + 86 + 492 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67640286499) 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, 269658 + ... + 456065.

It is an arithmetic number, because the mean of its divisors is an integer number (3657648960).

Almost surely, 2^67640286492 is an apocalyptic number.

It is an amenable number.

67640286492 is an abundant number, since it is smaller than the sum of its proper divisors (107926863588).

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

67640286492 is a wasteful number, since it uses less digits than its factorization.

67640286492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726599 (or 726591 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 67640286492 in words is "sixty-seven billion, six hundred forty million, two hundred eighty-six thousand, four hundred ninety-two".