61061947095 has 32 divisors (see below), whose sum is σ = 101988518400. Its totient is φ = 31137727104.

The previous prime is 61061947087. The next prime is 61061947123. The reversal of 61061947095 is 59074916016.

It is a happy number.

It is not a de Polignac number, because 61061947095 - 2³ = 61061947087 is a prime.

It is a super-2 number, since 2×61061947095² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841101 + ... + 910809.

It is an arithmetic number, because the mean of its divisors is an integer number (3187141200).

Almost surely, 2^61061947095 is an apocalyptic number.

61061947095 is a deficient number, since it is larger than the sum of its proper divisors (40926571305).

61061947095 is a wasteful number, since it uses less digits than its factorization.

61061947095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72279.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 61061947095 in words is "sixty-one billion, sixty-one million, nine hundred forty-seven thousand, ninety-five".