2061346651551 has 48 divisors (see below), whose sum is σ = 3537041040000. Its totient is φ = 1142736275520.

The previous prime is 2061346651547. The next prime is 2061346651571. The reversal of 2061346651551 is 1551566431602.

2061346651551 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 3 + 46 + 6 + 51 + 551 = 666.

It is not a de Polignac number, because 2061346651551 - 2² = 2061346651547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2061346651497 and 2061346651506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061346651571) 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, 18839901 + ... + 18948998.

It is an arithmetic number, because the mean of its divisors is an integer number (73688355000).

Almost surely, 2^{2061346651551} is an apocalyptic number.

2061346651551 is a deficient number, since it is larger than the sum of its proper divisors (1475694388449).

2061346651551 is a wasteful number, since it uses less digits than its factorization.

2061346651551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37788964 (or 37788961 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 2061346651551 in words is "two trillion, sixty-one billion, three hundred forty-six million, six hundred fifty-one thousand, five hundred fifty-one".