61664466256410 has 16 divisors (see below), whose sum is σ = 147994719015456. Its totient is φ = 16443857668368.

The previous prime is 61664466256343. The next prime is 61664466256423. The reversal of 61664466256410 is 1465266446616.

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, 1027741104244 + ... + 1027741104303.

It is an arithmetic number, because the mean of its divisors is an integer number (9249669938466).

Almost surely, 2^{61664466256410} is an apocalyptic number.

61664466256410 is an abundant number, since it is smaller than the sum of its proper divisors (86330252759046).

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

61664466256410 is a wasteful number, since it uses less digits than its factorization.

61664466256410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055482208557.

The product of its (nonzero) digits is 29859840, while the sum is 57.

The spelling of 61664466256410 in words is "sixty-one trillion, six hundred sixty-four billion, four hundred sixty-six million, two hundred fifty-six thousand, four hundred ten".