1261162146054 has 16 divisors (see below), whose sum is σ = 2524084479792. Its totient is φ = 420094017408.

The previous prime is 1261162146037. The next prime is 1261162146061. The reversal of 1261162146054 is 4506412611621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73331839 + ... + 73349034.

It is an arithmetic number, because the mean of its divisors is an integer number (157755279987).

Almost surely, 2^{1261162146054} is an apocalyptic number.

1261162146054 is an abundant number, since it is smaller than the sum of its proper divisors (1262922333738).

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

1261162146054 is a wasteful number, since it uses less digits than its factorization.

1261162146054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146682311.

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 1261162146054 its reverse (4506412611621), we get a palindrome (5767574757675).

The spelling of 1261162146054 in words is "one trillion, two hundred sixty-one billion, one hundred sixty-two million, one hundred forty-six thousand, fifty-four".