61542201266 has 32 divisors (see below), whose sum is σ = 113630767488. Its totient is φ = 24343280640.

The previous prime is 61542201241. The next prime is 61542201283. The reversal of 61542201266 is 66210224516.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882601 + ... + 1915011.

It is an arithmetic number, because the mean of its divisors is an integer number (3550961484).

Almost surely, 2^61542201266 is an apocalyptic number.

61542201266 is a deficient number, since it is larger than the sum of its proper divisors (52088566222).

61542201266 is a wasteful number, since it uses less digits than its factorization.

61542201266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42866.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 61542201266 in words is "sixty-one billion, five hundred forty-two million, two hundred one thousand, two hundred sixty-six".