61896921041611 has 16 divisors (see below), whose sum is σ = 62275869290880. Its totient is φ = 61519156807680.

The previous prime is 61896921041569. The next prime is 61896921041651. The reversal of 61896921041611 is 11614012969816.

It is a cyclic number.

It is not a de Polignac number, because 61896921041611 - 2³⁹ = 61347165227723 is a prime.

It is a super-2 number, since 2×61896921041611² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61896921041651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2363457105 + ... + 2363483293.

It is an arithmetic number, because the mean of its divisors is an integer number (3892241830680).

Almost surely, 2^{61896921041611} is an apocalyptic number.

61896921041611 is a deficient number, since it is larger than the sum of its proper divisors (378948249269).

61896921041611 is a wasteful number, since it uses less digits than its factorization.

61896921041611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48246.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 61896921041611 in words is "sixty-one trillion, eight hundred ninety-six billion, nine hundred twenty-one million, forty-one thousand, six hundred eleven".