64214612040 has 64 divisors (see below), whose sum is σ = 203975832960. Its totient is φ = 16116608000.

The previous prime is 64214612017. The next prime is 64214612041. The reversal of 64214612040 is 4021641246.

It is a happy number.

It is a super-3 number, since 3×64214612040³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64214611989 and 64214612007.

It is not an unprimeable number, because it can be changed into a prime (64214612041) 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, 15736836 + ... + 15740915.

It is an arithmetic number, because the mean of its divisors is an integer number (3187122390).

Almost surely, 2^64214612040 is an apocalyptic number.

64214612040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64214612040 is an abundant number, since it is smaller than the sum of its proper divisors (139761220920).

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

64214612040 is a wasteful number, since it uses less digits than its factorization.

64214612040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31477782 (or 31477778 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 64214612040 in words is "sixty-four billion, two hundred fourteen million, six hundred twelve thousand, forty".