64140153246 has 72 divisors (see below), whose sum is σ = 152388082080. Its totient is φ = 19485543168.

The previous prime is 64140153239. The next prime is 64140153361. The reversal of 64140153246 is 64235104146.

64140153246 is a `hidden beast` number, since 6 + 4 + 1 + 401 + 5 + 3 + 246 = 666.

It is a super-2 number, since 2×64140153246² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64140153246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 106870 + ... + 373766.

It is an arithmetic number, because the mean of its divisors is an integer number (2116501140).

Almost surely, 2^64140153246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64140153246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76194041040).

64140153246 is an abundant number, since it is smaller than the sum of its proper divisors (88247928834).

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

64140153246 is a wasteful number, since it uses less digits than its factorization.

64140153246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267010 (or 266994 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 64140153246 in words is "sixty-four billion, one hundred forty million, one hundred fifty-three thousand, two hundred forty-six".