51611021026 has 16 divisors (see below), whose sum is σ = 80422859520. Its totient is φ = 24814005840.

The previous prime is 51611021003. The next prime is 51611021027. The reversal of 51611021026 is 62012011615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51611021027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2641336 + ... + 2660803.

It is an arithmetic number, because the mean of its divisors is an integer number (5026428720).

Almost surely, 2^51611021026 is an apocalyptic number.

51611021026 is a deficient number, since it is larger than the sum of its proper divisors (28811838494).

51611021026 is a wasteful number, since it uses less digits than its factorization.

51611021026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302329.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 51611021026 in words is "fifty-one billion, six hundred eleven million, twenty-one thousand, twenty-six".