42156616611 has 16 divisors (see below), whose sum is σ = 57126427904. Its totient is φ = 27646765344.

The previous prime is 42156616591. The next prime is 42156616669. The reversal of 42156616611 is 11661665124.

It is a happy number.

It is not a de Polignac number, because 42156616611 - 2²² = 42152422307 is a prime.

It is a super-2 number, since 2×42156616611² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42156616611.

It is not an unprimeable number, because it can be changed into a prime (42156616511) 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, 1881 + ... + 290373.

It is an arithmetic number, because the mean of its divisors is an integer number (3570401744).

Almost surely, 2^42156616611 is an apocalyptic number.

42156616611 is a deficient number, since it is larger than the sum of its proper divisors (14969811293).

42156616611 is a wasteful number, since it uses less digits than its factorization.

42156616611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289290.

The product of its digits is 51840, while the sum is 39.

The spelling of 42156616611 in words is "forty-two billion, one hundred fifty-six million, six hundred sixteen thousand, six hundred eleven".