61001105047 has 2 divisors, whose sum is σ = 61001105048. Its totient is φ = 61001105046.

The previous prime is 61001105029. The next prime is 61001105119. The reversal of 61001105047 is 74050110016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61001105047 - 2²³ = 60992716439 is a prime.

It is a super-2 number, since 2×61001105047² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61001105027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500552523 + 30500552524.

It is an arithmetic number, because the mean of its divisors is an integer number (30500552524).

Almost surely, 2^61001105047 is an apocalyptic number.

61001105047 is a deficient number, since it is larger than the sum of its proper divisors (1).

61001105047 is an equidigital number, since it uses as much as digits as its factorization.

61001105047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 61001105047 in words is "sixty-one billion, one million, one hundred five thousand, forty-seven".