611401203612 has 36 divisors (see below), whose sum is σ = 1553494094880. Its totient is φ = 202744438272.

The previous prime is 611401203593. The next prime is 611401203631. The reversal of 611401203612 is 216302104116.

It is a happy number.

611401203612 is a `hidden beast` number, since 6 + 1 + 1 + 40 + 1 + 2 + 0 + 3 + 612 = 666.

It is an interprime number because it is at equal distance from previous prime (611401203593) and next prime (611401203631).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×611401203612² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43991412 + ... + 44005307.

Almost surely, 2^611401203612 is an apocalyptic number.

It is an amenable number.

611401203612 is an abundant number, since it is smaller than the sum of its proper divisors (942092891268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611401203612 is a wasteful number, since it uses less digits than its factorization.

611401203612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87996922 (or 87996917 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 611401203612 its reverse (216302104116), we get a palindrome (827703307728).

The spelling of 611401203612 in words is "six hundred eleven billion, four hundred one million, two hundred three thousand, six hundred twelve".