1051155661061 has 16 divisors (see below), whose sum is σ = 1184339460096. Its totient is φ = 924275550000.

The previous prime is 1051155661051. The next prime is 1051155661063. The reversal of 1051155661061 is 1601665511501.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1051155661061 is a prime.

It is a super-2 number, since 2×1051155661061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051155661063) 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, 185765 + ... + 1461786.

It is an arithmetic number, because the mean of its divisors is an integer number (74021216256).

Almost surely, 2^{1051155661061} is an apocalyptic number.

1051155661061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1051155661061 is a deficient number, since it is larger than the sum of its proper divisors (133183799035).

1051155661061 is a wasteful number, since it uses less digits than its factorization.

1051155661061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649464.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1051155661061 in words is "one trillion, fifty-one billion, one hundred fifty-five million, six hundred sixty-one thousand, sixty-one".