65820642952072 has 32 divisors (see below), whose sum is σ = 125754135963480. Its totient is φ = 32286323929600.

The previous prime is 65820642952069. The next prime is 65820642952121. The reversal of 65820642952072 is 27025924602856.

It can be written as a sum of positive squares in 4 ways, for example, as 61839444805636 + 3981198146436 = 7863806^2 + 1995294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65820642951998 and 65820642952016.

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, 2827003 + ... + 11816650.

Almost surely, 2^{65820642952072} is an apocalyptic number.

It is an amenable number.

65820642952072 is a deficient number, since it is larger than the sum of its proper divisors (59933493011408).

65820642952072 is a wasteful number, since it uses less digits than its factorization.

65820642952072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14654313 (or 14654309 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 65820642952072 in words is "sixty-five trillion, eight hundred twenty billion, six hundred forty-two million, nine hundred fifty-two thousand, seventy-two".