64621611342 has 24 divisors (see below), whose sum is σ = 143428456080. Its totient is φ = 21015157920.

The previous prime is 64621611331. The next prime is 64621611343. The reversal of 64621611342 is 24311612646.

64621611342 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 1 + 611 + 34 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64621611297 and 64621611306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621611343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43780842 + ... + 43782317.

It is an arithmetic number, because the mean of its divisors is an integer number (5976185670).

Almost surely, 2^64621611342 is an apocalyptic number.

64621611342 is an abundant number, since it is smaller than the sum of its proper divisors (78806844738).

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

64621611342 is a wasteful number, since it uses less digits than its factorization.

64621611342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87563208 (or 87563205 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 64621611342 in words is "sixty-four billion, six hundred twenty-one million, six hundred eleven thousand, three hundred forty-two".