61653145362164 has 6 divisors (see below), whose sum is σ = 107893004383794. Its totient is φ = 30826572681080.

The previous prime is 61653145362113. The next prime is 61653145362203. The reversal of 61653145362164 is 46126354135616.

It can be written as a sum of positive squares in only one way, i.e., 34331302741264 + 27321842620900 = 5859292^2 + 5227030^2 .

It is a super-2 number, since 2×61653145362164² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7706643170267 + ... + 7706643170274.

It is an arithmetic number, because the mean of its divisors is an integer number (17982167397299).

Almost surely, 2^{61653145362164} is an apocalyptic number.

It is an amenable number.

61653145362164 is a deficient number, since it is larger than the sum of its proper divisors (46239859021630).

61653145362164 is a wasteful number, since it uses less digits than its factorization.

61653145362164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15413286340545 (or 15413286340543 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 53.

The spelling of 61653145362164 in words is "sixty-one trillion, six hundred fifty-three billion, one hundred forty-five million, three hundred sixty-two thousand, one hundred sixty-four".