1051155661054 has 4 divisors (see below), whose sum is σ = 1576733491584. Its totient is φ = 525577830526.

The previous prime is 1051155661051. The next prime is 1051155661063. The reversal of 1051155661054 is 4501665511501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1051155661054² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051155660998 and 1051155661016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051155661051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262788915262 + ... + 262788915265.

It is an arithmetic number, because the mean of its divisors is an integer number (394183372896).

Almost surely, 2^{1051155661054} is an apocalyptic number.

1051155661054 is a deficient number, since it is larger than the sum of its proper divisors (525577830530).

1051155661054 is an equidigital number, since it uses as much as digits as its factorization.

1051155661054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525577830529.

The product of its (nonzero) digits is 90000, while the sum is 40.

The spelling of 1051155661054 in words is "one trillion, fifty-one billion, one hundred fifty-five million, six hundred sixty-one thousand, fifty-four".