61857300220468 has 6 divisors (see below), whose sum is σ = 108250275385826. Its totient is φ = 30928650110232.

The previous prime is 61857300220453. The next prime is 61857300220487. The reversal of 61857300220468 is 86402200375816.

It can be written as a sum of positive squares in only one way, i.e., 39561734995344 + 22295565225124 = 6289812^2 + 4721818^2 .

It is a super-2 number, since 2×61857300220468² (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, 7732162527555 + ... + 7732162527562.

Almost surely, 2^{61857300220468} is an apocalyptic number.

It is an amenable number.

61857300220468 is a deficient number, since it is larger than the sum of its proper divisors (46392975165358).

61857300220468 is a wasteful number, since it uses less digits than its factorization.

61857300220468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15464325055121 (or 15464325055119 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 61857300220468 in words is "sixty-one trillion, eight hundred fifty-seven billion, three hundred million, two hundred twenty thousand, four hundred sixty-eight".