61401211011 has 48 divisors (see below), whose sum is σ = 103882168000. Its totient is φ = 34932788352.

The previous prime is 61401210991. The next prime is 61401211043. The reversal of 61401211011 is 11011210416.

It is not a de Polignac number, because 61401211011 - 2⁶ = 61401210947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61401215011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 663495 + ... + 750351.

Almost surely, 2^61401211011 is an apocalyptic number.

61401211011 is a deficient number, since it is larger than the sum of its proper divisors (42480956989).

61401211011 is a wasteful number, since it uses less digits than its factorization.

61401211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87113 (or 87096 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 61401211011 its reverse (11011210416), we get a palindrome (72412421427).

The spelling of 61401211011 in words is "sixty-one billion, four hundred one million, two hundred eleven thousand, eleven".