61211140401612 has 96 divisors (see below), whose sum is σ = 146643775229952. Its totient is φ = 19862985424896.

The previous prime is 61211140401601. The next prime is 61211140401689. The reversal of 61211140401612 is 21610404111216.

It is a self number, because there is not a number n which added to its sum of digits gives 61211140401612.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747010308 + ... + 747092244.

It is an arithmetic number, because the mean of its divisors is an integer number (1527539325312).

Almost surely, 2^{61211140401612} is an apocalyptic number.

It is an amenable number.

61211140401612 is an abundant number, since it is smaller than the sum of its proper divisors (85432634828340).

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

61211140401612 is a wasteful number, since it uses less digits than its factorization.

61211140401612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89047 (or 89045 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 61211140401612 its reverse (21610404111216), we get a palindrome (82821544512828).

The spelling of 61211140401612 in words is "sixty-one trillion, two hundred eleven billion, one hundred forty million, four hundred one thousand, six hundred twelve".